Gilsonite History

Gilsonite was found in America prior to Samuel H. Gilson’s 1860 discovery. Gilson was not one of the primary discoverers of Gilsonite, but owing to his marketing efforts, the locals referred to this mineral by its common name, Gilsonite, rather than its scientific designation, uintaite. In 1888, he and a business partner launched the Gilsonite corporation. He extracted Gilsonite and marketed it on a commercial basis, so increasing its notoriety.
There are natural bitumen mines in the majority of oil-rich nations, except Saudi Arabia. The most significant Gilsonite mines in terms of reserves are as follows:
It encompasses the United States, Canada, Iran, Iraq, Russia, Venezuela, China, Australia, Mexico, and the Philippines. About 65 percent of the world’s reserves are found in the Americas, while Iran, the third biggest deposit, has about 15 million tons of these reserves.

We manufacture the highest quality Gilsonite (Natural Bitumen) in different types and grades and export them from Iran, Turkey, and the UAE to other countries around the world.

  • Iran Gilsonite (Iran Natural Bitumen)
  • Turkey Gilsonite (Turkey Natural Bitumen)
  • UAE Gilsonite (UAE Natural Bitumen)


Gilsonite, often referred to as Natural Bitumen, is a solid hydrocarbon that originates from the natural seepage of petroleum in rock formations. It’s primarily composed of carbon along with several other elements including nitrogen, oxygen, and sulfur.

Distinctive for its shiny black appearance, Gilsonite is brittle in nature and softens upon heating. This unique property makes it exceptionally useful in many industrial applications. When mixed with other materials, it enhances the performance and durability of the end product. Notably, it differs from the typical asphalt or tarry bitumen; Gilsonite is naturally occurring and doesn’t require distillation from crude oil.

In essence, Gilsonite (Natural Bitumen) stands out as a versatile, naturally occurring hydrocarbon resin with numerous applications in various industries, from construction to printing inks.


Understanding the different types and grades of Gilsonite is crucial to ensure it’s applied effectively across various industries. Here’s a breakdown:


Currently, we provide Gilsonite in three types according to the customer’s desired application:

  1. Lump Gilsonite: This is Gilsonite in its most raw and natural form. It appears as lumps or chunks and is typically used as a direct additive in its untreated form in various applications.

  2. Granulated Gilsonite: Here, the natural lumps are processed and broken down into granules. This format makes it easier to distribute and blend with other materials.

  3. Micronized Gilsonite Powder: This is the finest form of Gilsonite. The granulated Gilsonite undergoes a further refinement process, resulting in a fine powder. This micronized form is ideal for industries that require a smooth, uniform consistency.


The grading of Gilsonite is primarily based on its ash content, which impacts its purity, and the mesh size, which determines its particle size.

  1. Grade 1: Gilsonite with up to 5% ash content, moisture up to 1%, available in meshes 30, 40, 100 to 300. This grade represents one of the purest forms of Gilsonite.

  2. Grade 2: Contains up to 10% ash content, moisture capped at 1%, and meshes 30, 40, 100 to 300.

  3. Grade 3: Features ash content up to 15%, moisture levels up to 1%, available in meshes 30, 40, 100 to 300.

  4. Grade 4: This variant holds ash content up to 20%, a moisture level up to 1%, and is available in meshes 30, 40, 100 to 300.

  5. Grade 5: The grade with up to 25% ash content, moisture levels at a maximum of 1%, and provided in meshes 30, 40, 100 to 300.


Gilsonite, with its widespread usage and historical significance, has acquired several alternative names and synonyms. These names often vary based on the region, industry, or historical context in which it’s used. Here are some of the commonly used alternative names for Gilsonite:

  1. Natural Asphalt: A name that draws attention to its similarity with the petroleum-derived asphalt but emphasizes its natural origin.

  2. Uintahite: Derived from the Uinta Basin in Utah, this name acknowledges a primary source of Gilsonite.

  3. Asphaltum: An older term historically used to refer to various forms of natural bitumen, including Gilsonite.

  4. Mineral Pitch: This name highlights the viscous nature of the substance, reminiscent of pitch.

  5. Natural Bitumen: A direct indicator of its bituminous nature, distinguishing it from petroleum-derived bitumen.

  6. Mineral Bitumen: This term is synonymous with Natural Bitumen, emphasizing the mineral-like, solid nature of the substance.

  7. Jew’s Pitch: A more historical term, not commonly used in modern times.

  8. Elsin Asphalt: Though less common, this term occasionally surfaces in specific contexts or regions.

As a reminder, while these terms might sometimes be used interchangeably, it’s essential to use them accurately, especially in industrial or technical contexts, ensuring clarity and preventing potential misunderstandings.


According to the United States Geological Survey, the states of Utah and Colorado in the United States are home to the world’s greatest deposits of natural Bitumen or Gilsonite, with an estimated 45 million tons of definite reserves.

This resource is assessed on the basis of real available natural Bitumen, since many Gilsonite mines in the globe are inaccessible owing to vein width and depth restrictions, and it is only normal that these instances are not included in the calculation of the mines’ definite reserves. For a fair comparison, it should be stated that the Gilsonite stockpile represents just 0.5% of the United States’ yearly oil output.

Saudi Arabia is an exception to the rule that natural Bitumen mines are mostly located in oil-rich nations. America, Canada, Iran, Iraq, Russia, Venezuela, China, Australia, Mexico, the Philippines, and China all have natural bitumen mines. The estimated worldwide natural bitumen reserves are around 100 million tons. Approximately 65% of the world’s Gilsonite deposits are situated on the North American continent, namely in the United States and Canada, while Iran, as the world’s third biggest natural Bitumen resource, owns approximately 15%, or 15 million tons, of these reserves. Gilsonite mines are often situated in the western region of Iran, particularly in Kermanshah, Gilangharb, Somar, Ilam, and the eastern portion of Lorestan province.


Gilsonite, or Natural Bitumen, is a naturally occurring hydrocarbon resin. Its unique composition and characteristics stem from the specific materials and compounds it contains. Here’s a breakdown of its primary components:

  1. Hydrocarbons: The bulk of Gilsonite is made up of a complex mixture of hydrocarbons. These hydrocarbons primarily consist of aromatic and aliphatic structures, which give Gilsonite its adhesive and binding properties.

  2. Asphaltenes: These are high molecular weight hydrocarbons that are present in Gilsonite. Asphaltenes are responsible for the black color and contribute to the viscous nature of the substance.

  3. Resins: Resins in Gilsonite are medium molecular weight compounds that provide the material with its ductility and flexibility. They are also responsible for its adhesive properties.

  4. Mineral Matter: Gilsonite contains a certain percentage of mineral impurities or inorganic materials, including silicates and various metals. The presence of these minerals can affect the ash content when the material is burned.

  5. Volatile Organic Compounds (VOCs): A small percentage of Gilsonite is made up of VOCs. These compounds evaporate at room temperature or under slight heating.

  6. Sulfur Compounds: Gilsonite contains sulfur in various forms, which might be a consideration for certain applications, especially where sulfur content is a concern.

  7. Nitrogenous Compounds: These compounds are present in small amounts and can influence the behavior and reactivity of Gilsonite in certain applications.

  8. Moisture: Even after purification and processing, Gilsonite can contain a minimal amount of moisture, which can affect its handling and performance in some uses.

The exact composition of Gilsonite can vary depending on its source and the region from which it is extracted. It’s essential to analyze specific samples for precise composition details, especially when used for particular industrial applications.


The mines of western Iran (Ilam, Gilangharb, Eyvangharb, and Lorestan) are where the Petronaft Gilsonite Lump is mined, and then it is brought to the plant site to be stored there. Gilsonite lumps are poured into the hopper by the digger loader as they are broken up. After that, they are brought to the hammer mill by means of a strip conveyor. In this way, Gilsonite is divided into different grades based on the percentage of ash present and the desired size. The required tests are then completed, quality control is performed, and the product is packaged and ready to be exported in different types and grades from Iran, Turkey, and the UAE to other countries around the world.
The production process of Gilsonite can be broadly categorized into the following steps:

  1. Extraction:

    • Mining: Gilsonite is extracted through underground mining. Miners access the vertical Gilsonite veins by drilling and blasting.
    • Collection: Post-blasting, the loosened Gilsonite is collected manually or mechanically.
  2. Initial Processing:

    • Size Reduction: The mined Gilsonite lumps are subjected to size reduction processes, usually through crushers or granulators, to produce smaller particles suitable for further processing.
    • Screening: The crushed material is screened to separate finer particles from larger chunks. This also helps in segregating impurities.
  3. Purification:

    • Gravity Separation: Utilizing differences in density, unwanted rock and other impurities are separated from the Gilsonite.
    • Solvent Extraction: For higher purity levels, the Gilsonite can be dissolved in solvents, and then undesired components can be removed. After which, the solvent is evaporated, leaving behind pure Gilsonite.
  4. Secondary Processing:

    • Micronization: For applications that require finely divided Gilsonite, the material can be micronized into fine powders using special mills.
    • Agglomeration: Sometimes, it might be beneficial to convert the fine powders back into granulated forms or pellets for ease of handling or specific applications.
  5. Quality Control and Packaging:

    • Testing: Before packaging, samples are typically tested for various parameters such as ash content, softening point, purity, and solubility to ensure they meet industry-specific requirements.
    • Packaging: Depending on the end-use, Gilsonite is packaged in bags, drums, or bulk containers for transportation.
  6. Storage and Distribution: Once packaged, the Gilsonite is stored in warehouses ready for distribution. Proper storage conditions are maintained to ensure the quality of the product remains consistent.

It’s important to note that while the above process provides a general overview, specific steps and methodologies can vary depending on the source of the Gilsonite, the region of extraction, and the desired end product’s specifications.


HS Code: The Harmonized System Code (HS Code) for a specific product can vary depending on the country and how the product is categorized in international trade systems. Typically, you would need to refer to the customs or trade department of your specific country or the country you are exporting to, to get the precise HS Code for Gilsonite. However, a common HS code used for Gilsonite might be 2715.00, which covers bituminous mixtures based on natural asphalt. Always confirm with an official source before making trade decisions.

Chemical Formula: Gilsonite is a complex mixture of hydrocarbons and does not have a single fixed chemical formula like simple compounds. Its composition can vary based on the source and region of extraction.

CAS Number: The Chemical Abstracts Service (CAS) number for Gilsonite is 12002-43-6.

It’s essential to note that while these identifiers can provide general information about Gilsonite, specifics like the HS Code might vary based on local customs regulations and the specific grade or form of the product being traded. Always ensure to verify details from authoritative sources when dealing with trade or regulatory matters.

Heavy machinery in the mine extracting Gilsonite or Natural Asphalt or Natural Bitumen


Gilsonite’s durability is one of its defining features that sets it apart in numerous applications. The very nature of this hydrocarbon resin offers substantial benefits in terms of its life span and performance. Here’s a deeper dive into its durability aspects:

  1. Weather Resistance: Gilsonite has an innate resistance to the damaging effects of UV rays and other weather-related factors. Its ability to resist degradation under prolonged sunlight exposure makes it an excellent choice for outdoor applications, like in asphalt mixtures for roads.

  2. Chemical Resistance: Gilsonite is naturally resistant to most acids, bases, and salts, providing longevity in environments where these chemicals are present. This feature makes it valuable in certain industrial applications.

  3. Thermal Stability: Gilsonite demonstrates stable properties under varying temperatures. While it softens under heat, its thermal stability ensures that it doesn’t degrade quickly with fluctuating temperatures, which is essential in paving and roofing applications.

  4. Low Permeability: Its low permeability ensures that water, gases, and other substances have difficulty passing through. This characteristic gives Gilsonite-based products a natural defense against moisture intrusion, reducing the risk of corrosion or material breakdown.

  5. Natural Adhesiveness: Gilsonite’s inherent adhesive properties ensure that it binds well with other materials, ensuring longevity in applications where it’s mixed with other components.

  6. Biodegradation Resistance: Unlike some organic materials, Gilsonite is not prone to decay or rot, which extends its life span in various applications.

  7. Wear Resistance: When used in pavements or other surface applications, Gilsonite imparts a degree of wear resistance, resulting in longer-lasting surfaces.

While Gilsonite boasts several durability features, it’s essential to recognize that its longevity in specific applications can be influenced by external factors, like the quality of other mixed materials, environmental conditions, and the frequency of usage. However, in the right conditions and when applied properly, Gilsonite can offer a significantly extended lifespan, reducing the need for frequent maintenance or replacements.


The performance of Gilsonite, or Natural Bitumen, is well-regarded across various industries, due to its unique set of properties that offer versatility and efficiency. Here’s a look at the performance aspects of Gilsonite:

  1. Enhanced Adhesion: Gilsonite’s natural tackiness ensures superior adhesion when mixed with other materials, making it an ideal binder in applications such as asphalt and paints.

  2. Temperature Flexibility: Gilsonite’s performance remains consistent across a range of temperatures. It doesn’t become overly brittle in cold conditions nor does it soften excessively in the heat, making it ideal for road construction in diverse climates.

  3. High Softening Point: This hydrocarbon resin has a high softening point, which translates to better resistance to rutting and deformation under heat, especially in road paving applications.

  4. Improved Elasticity: Gilsonite-modified products often demonstrate improved elasticity, which means they can withstand minor structural movements or shifts without cracking or breaking.

  5. Reinforced Tensile Strength: When introduced to various mixtures, Gilsonite can enhance the tensile strength of the material, providing added resistance to wear and tear.

  6. Low Solubility in Water: Gilsonite’s insolubility in water means that it doesn’t degrade quickly in wet conditions, ensuring longevity in moisture-prone environments.

  7. Resistance to Aging: Owing to its natural composition and resistance to UV rays, Gilsonite has an inherent resistance to aging, ensuring that its performance doesn’t diminish quickly over time.

  8. Sealant Performance: Gilsonite acts as an effective sealant, providing barriers against moisture intrusion and environmental contaminants.

  9. Improved Cohesion: In mixed formulations, Gilsonite can enhance the cohesion of the mix, reducing the risk of premature failure.

  10. High Load Bearing Capacity: For road construction, the incorporation of Gilsonite can increase the road’s ability to bear heavy loads without deforming.

It’s essential to recognize that while Gilsonite has impressive performance attributes, achieving optimal results requires careful formulation, appropriate application methods, and considering external factors like climate and usage patterns. Nonetheless, when harnessed effectively, Gilsonite’s performance can significantly enhance the quality and longevity of various products and applications.


Gilsonite’s unique chemical composition and physical properties make it a sought-after component across various industries. Here are the notable applications and uses of Gilsonite:

  1. Road Construction:
    • Asphalt Modification: Enhances the performance of hot-mix asphalt, offering increased resistance to rutting and cracking.
    • Paving: Acts as a binder and modifier, enhancing asphalt’s durability and longevity.
  2. Oil & Gas:
    • Drilling Mud Additive: Improves the performance of oil-based drilling muds, enhancing rheological properties and reducing fluid loss.
    • Cementing: Used in cement compositions to improve properties like slurry weight reduction.
  3. Paints & Inks:
    • Coloring Agent: Imparts a black hue to various inks and paints.
    • Binding Property: Helps in binding pigments, improving paint durability and finish.
  4. Foundry:
    • Sand Binder: Acts as a binder in foundry sand mixtures, ensuring the sand retains its shape during casting.
    • Carbon Raiser: Enhances the carbon content in foundry products.
  5. Sealants & Waterproofing:
    • Waterproofing Agent: Applied on roofs, walls, and floors to prevent water infiltration.
    • Joint Sealer: Used in the construction sector to seal joints and gaps, preventing moisture penetration.
  6. Mastics & Adhesives:
    • Binding Agent: Serves as a primary binder in various adhesive formulations, ensuring strong bonding capabilities.
    • Modifier: Enhances the properties of other adhesives when used as an additive.
  7. Electrical:
    • Insulating Compound: Due to its non-conductive properties, it’s used as an insulating material in certain electrical applications.
  8. Agriculture:
    • Wetting Agent: Helps in the formulation of wettable powders and other agrochemical applications.
  9. Construction:
    • Soundproofing: Used in materials that help in soundproofing walls and floors in buildings.
    • Damp Proofing: Employed as a damp-proof course material in construction.
  10. Chemical Industry:
    • Modifier: Used as a modifier in the production of other chemicals, enhancing properties or yields.
  11. Rubber & Plastic:
    • Reinforcing Agent: Improves the tensile strength of certain rubber and plastic products.
    • Extender: Acts as a filler and extender in various rubber and plastic formulations.

Given Gilsonite’s versatility, the above applications are just a snapshot of its full potential. The specific use often depends on the type and grade of Gilsonite, as well as the requirements of the specific industry or application.

A steel factory where Gilsonite or Natural Asphalt or Natural Bitumen is also used


Gilsonite’s unique characteristics offer a range of advantages that make it highly valuable across various industries. Below are some key benefits:

  1. Eco-Friendly:

    • Comprised of natural, non-toxic materials, contributing to a reduced carbon footprint.
  2. Cost-Effectiveness:

    • Generally cheaper than synthetic alternatives, providing an economic edge.
  3. Enhanced Durability:

    • Boosts the longevity of materials like asphalt, coatings, and paints.
  4. Thermal Stability:

    • Remains stable under high heat, making it useful in applications that involve high-temperature conditions.
  5. Adhesive Qualities:

    • Exceptional bonding capabilities, ideal for adhesives and sealants.
  6. Water Resistance:

    • Provides an effective barrier against moisture, useful in waterproofing applications.
  7. Flexibility:

    • Can be modified to meet specific industrial needs, making it highly versatile.
  8. Improved Rheology:

    • Enhances the flow properties in substances like paints, inks, and drilling fluids.
  9. High Carbon Content:

    • Valuable in applications that require high levels of carbon such as metal casting and certain chemical processes.
  10. Solubility:

    • Soluble in organic solvents, but insoluble in water, increasing its applicability in various chemical procedures.
  11. Chemical Resistance:

    • Offers resistance to acids, alkalis, and other corrosive agents, making it suitable for harsh environments.
  12. Non-reactivity:

    • Does not interfere with other substances, making it a reliable component in compound mixtures.
  13. Ease of Application:

    • Available in various forms such as lump, granules, and powder for different usage requirements.
  14. Reduced Maintenance:

    • Its durable nature often results in lower maintenance costs over time.
  15. Sound Insulation:

    • Provides a certain level of acoustic insulation when applied in construction materials.

Considering these advantages, it’s clear that Gilsonite’s diverse features make it a preferred choice for multiple applications.


Gilsonite, given its varied applications across different industries, can be utilized in several ways. Here’s a general guide on how to use Gilsonite, tailored to some of its common applications:

  1. Road Construction & Paving:

    • Mixing: Integrate Gilsonite with the hot asphalt mix during the production phase.
    • Application: Lay the mixture as you would with regular asphalt using standard road-laying equipment.
    • Curing: Allow the laid mixture to cure adequately before allowing traffic.
  2. Inks & Paints:

    • Dissolution: Dissolve Gilsonite in appropriate solvents like mineral spirits to achieve the desired consistency.
    • Mixing: Integrate the dissolved Gilsonite into the paint or ink formulation, ensuring thorough mixing for uniformity.
    • Application: Apply using regular paintbrushes, rollers, or spray equipment.
  3. Drilling Fluids:

    • Slurry Formation: Mix Gilsonite with other drilling fluid components to form a slurry.
    • Addition: Introduce the Gilsonite slurry into the drilling fluid system while maintaining consistent agitation.
    • Application: Use the drilling fluid as required in the drilling process.
  4. Foundry:

    • Blend: Combine Gilsonite with foundry sand and binding agents.
    • Mold Creation: Use the mixture to create molds for casting metal.
    • Casting: Pour molten metal into the mold and let it cool and solidify.
  5. Sealant & Waterproofing:

    • Melting: Heat Gilsonite until it’s in a molten state.
    • Application: Apply the molten Gilsonite to the desired surface using trowels or spray equipment.
    • Cooling: Allow the Gilsonite to cool and solidify, forming a waterproof barrier.
  6. Mastics & Adhesives:

    • Formulation: Blend Gilsonite with other adhesive components until achieving a consistent mixture.
    • Application: Use a spatula or other suitable tools to apply the adhesive where needed.
  7. General Tips:

    • Particle Size: Ensure you’re using the right particle size (lump, granulated, or micronized powder) suitable for your specific application.
    • Temperature: Monitor temperatures when melting or integrating Gilsonite, ensuring it’s within the recommended range.
    • Storage: Store Gilsonite in a cool, dry place and keep it sealed until use to maintain its quality.
    • Safety: Always use appropriate safety equipment, including gloves and masks, when handling and using Gilsonite.

Remember, the exact usage instructions might vary depending on the specific type, grade, and intended application of Gilsonite. It’s crucial to refer to the manufacturer’s guidelines or consult industry experts when in doubt.


Gilsonite, a naturally occurring hydrocarbon resin, boasts of a unique set of properties that set it apart from synthetic resins and bitumen. Here’s a closer look at its distinct properties and features:

  1. Physical State:

    • Typically solid at room temperature, presenting a shiny black appearance.
  2. Solubility:

    • Soluble in aromatic and aliphatic solvents but remains insoluble in water and alcohols.
  3. High Softening Point:

    • Compared to many other bituminous substances, Gilsonite has a higher softening point, ranging from 130°C to 210°C.
  4. Low Penetration Index:

    • Demonstrates a low level of ductility, which means it’s quite rigid and less susceptible to deformation.
  5. Thermal Stability:

    • Maintains stability under varying temperature conditions, especially under high heat.
  6. Natural Lustrous Finish:

    • Imparts a glossy finish when used in paints and varnishes due to its natural sheen.
  7. High Carbon Content:

    • Contains around 80-87% carbon, making it suitable for applications demanding high carbon presence.
  8. Chemical Stability:

    • Resistant to chemicals, preventing reactions when mixed with other compounds.
  9. Low Volatility:

    • Minimal evaporative losses, which is beneficial in applications like inks and paints.
  10. Flammability:

    • Non-volatile nature makes it less prone to ignition compared to other hydrocarbons.
  11. Adhesive Property:

    • Excellent binding capabilities, making it a key ingredient in sealants and adhesives.
  12. Hydrophobic Nature:

    • Repels water, making it beneficial in waterproofing applications.
  13. Low Permeability:

    • Acts as a barrier to gases and vapors, beneficial in sealing and protective applications.
  14. Density:

    • Typically denser than other forms of bitumen, with a specific gravity ranging between 1.05 to 1.10.
  15. Elasticity:

    • Exhibits a certain level of flexibility, especially when mixed with other substances.

These properties not only affirm Gilsonite’s utility across numerous sectors but also highlight its superior performance attributes compared to many synthetic alternatives.


Specification of Gilsonite (5-10%)

Color in MassBlack
Color in streak or powderBrown-Black
Softening point160-220
Moisture content<3
Specific gravity@ 77℉1.02-1.2
Hardness (mohr’s scale)2
Flash point,°C, C.O.C>290
Trace elements<1
Solubility in T.C.E Wt%70-85
Solubility in CS2,Wt%70-90
Fixed carbon25-35

Specification of Gilsonite (10-15%)

Color in massBlack
Color in streak or powderBlack
softenin point200- 240˚C
Moisture content<3
Specific gravity @77˚F1.04-1.06
Hardness (Mohr҆ s scale)2
Flash point,˚C,C.O.C280<
Trace elements<1
Volatile matter55-70
Fixed carbon20-35

Specification of Gilsonite (15-20%)

Color in massBlack
Color in streak or powderBlack
Softening point220-260˚C
Moisture content<3
Specific gravity @77˚F1.04-1.2
Hardness (Mohr҆ s scale)2
Flash point,˚C,C.O.C300<
Trace elements<1
Solubility in T.C.E., Wt%70-85
Volatile matter60-75
Fixed Carbone20-35

Specification of Gilsonite (20-25%)

Color in massBlack
Color in streak or powderBlack
Black softening point220-260˚C
Moisture content<3
Specific gravity @77˚F1.04 -1.2
Hardness (Mohr҆ s scale)2
Flash point,˚C,C.O.C300<
Trace elements<1
Solubility in T.C.E., Wt%60-70
Solubility in CS2,Wt%70-80
Volatile matter60-75
Fixed Carbone20-35


The compatibility of Gilsonite resin with typical film-forming and elastomeric systems is outlined below. Due to the fact that Gilsonite compatibility may be affected by differences within a resin/elastomer class and by other formulation components, it is best practice to validate Gilsonite compatibility in the precise formula of interest.

Adhesive/ Coating SystemsGeneral Compatibility of Gilsonite
Natural rubberFAIR
Cellulose esters          POOR
Resorcinol formaldehydeFAIR
Urea formaldehydeGOOD
Melamine formaldehydeGOOD
Unsaturated polyesterFAIR
Acrylic acid diesterPOOR
Polyvinyl acetateFAIR
Polyvinyl alcoholFAIR
Polyvinyl chlorideGOOD
Ethylene/vinyl acetateGOOD


While Gilsonite (Natural Bitumen) is renowned for its durability and longevity, ensuring proper maintenance can further enhance its performance and lifespan, especially when used in specific applications. Here’s a guide to maintaining Gilsonite:

  1. Storage:

    • Store in a cool, dry place, away from direct sunlight to prevent any degradation.
    • Ensure that the storage area is well-ventilated to avoid moisture accumulation.
  2. Handling:

    • Always handle with clean gloves to avoid contamination.
    • Ensure that there’s minimal dust in the environment during handling.
  3. Cleaning:

    • If used in paving or construction, periodic cleaning with mild detergents can help maintain its appearance and prevent residue buildup.
    • For painted surfaces, regular cleaning can also help maintain the lustrous finish imparted by Gilsonite.
  4. Protection Against Moisture:

    • While Gilsonite is hydrophobic, prolonged exposure to moisture can affect its quality. Ensure surfaces are dry before application.
  5. Regular Inspection:

    • For structural applications, regular checks for any signs of wear, cracks, or degradation can help in early detection and timely repair.
  6. Avoid Mixing with Incompatible Materials:

    • Always refer to technical datasheets to ensure that Gilsonite isn’t mixed with materials that might degrade its quality.
  7. Temperature Monitoring:

    • Though Gilsonite has excellent thermal stability, avoid exposing it to extreme temperatures for prolonged periods.
  8. Sealant Checks:

    • For applications where Gilsonite is used as a sealant, periodic checks and reapplications might be necessary to maintain optimal sealing.
  9. Limit Mechanical Stress:

    • If used in applications that endure mechanical stress, ensure that the stress levels do not exceed the recommended limits.
  10. Consultation for Specific Uses:

    • Depending on the specific use or application of Gilsonite, consulting with experts or manufacturers can provide insights into tailored maintenance practices.

By adhering to these maintenance guidelines, you can ensure the consistent performance and longevity of Gilsonite in its various applications.

Some Gilsonite or Natural Asphalt or Natural Bitumen powder and lumps


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The Gilsonite shipping by many types of packing including the following:

1-Types of granulated Gilsonite packaging envelopes:

  • Laminated multi-layer bags (25kg±5%)
  • Multi-layer paper bags (kraft) (25kg±5%)
  • AD Star bags with weight (25kg±5%)
  • Jumbo bags from 850 kg to 1 ton

2-Gilsonite lump packing types:

  • One-ton jumbo bags
  • bulk

3-Types of micronized Gilsonite powder packing envelopes:

  • Laminated multi-layer bags (25kg±5%)
  • Multi-layer paper bags (kraft) (25kg±5%)
  • AD Star bags with weight (25kg±5%)
  • Jumbo bags from 850 kg to 1 ton


Handling and working with Gilsonite, like other industrial materials, requires adherence to certain safety guidelines to protect workers and the environment. Here are crucial safety tips for those working with or around Gilsonite:

  1. Personal Protective Equipment (PPE):

    • Eye Protection: Always wear safety goggles to prevent dust or particles from entering the eyes, especially during grinding or when Gilsonite is in powder form.
    • Respiratory Protection: Wear a dust mask or a respirator in environments with airborne Gilsonite particles to avoid inhalation.
    • Skin Protection: Wear gloves, long sleeves, and protective clothing to prevent skin contact.
  2. Ventilation: Ensure adequate ventilation in areas where Gilsonite is being processed or used, especially in enclosed spaces, to prevent the buildup of dust or fumes.

  3. Avoid Open Flames: Gilsonite is flammable. Keep it away from open flames, sparks, or other ignition sources.

  4. Dust Management: Regularly clean work areas to prevent the accumulation of Gilsonite dust, which can be a respiratory hazard and a potential fire risk.

  5. Safe Storage: Store Gilsonite in a cool, dry place away from incompatible materials. Ensure the storage area is well-ventilated and free from ignition sources.

  6. Avoid Ingestion: Do not eat, drink, or smoke when handling Gilsonite. Always wash hands thoroughly after handling.

  7. First Aid Measures:

    • Inhalation: Move to fresh air if inhaled and seek medical attention if breathing difficulties persist.
    • Skin Contact: Wash with plenty of water and soap. Seek medical attention if irritation persists.
    • Eye Contact: Rinse immediately with plenty of water for several minutes. Consult a physician if irritation continues.
    • Ingestion: Drink plenty of water and seek immediate medical attention.
  8. Spillage: In the event of a spill, sweep up the material while wearing appropriate PPE to prevent dust generation. Avoid using water as it can create slippery conditions.

  9. Disposal: Dispose of Gilsonite waste according to local regulations. Avoid disposing of it in general landfill without proper treatment.

  10. Training: Ensure all workers and personnel involved with Gilsonite handling and processing are adequately trained on its properties, risks, and safety measures.

Being aware of these safety guidelines ensures that industries using Gilsonite do so responsibly, minimizing risks to workers and the surrounding environment. It’s essential always to refer to the specific Safety Data Sheet (SDS) provided by the Gilsonite supplier for comprehensive safety details and guidelines.


Given the different packaging types for Gilsonite, the guidelines for transportation and storage vary. Here’s a breakdown based on the provided packaging details:

  1. Transportation & Storage for Granulated Gilsonite:

Laminated Multi-layer Bags (25kg±5%):

  • Store on pallets in a dry environment to prevent moisture from affecting the material.
  • During transport, ensure that the bags are not stacked excessively high to prevent them from tearing under pressure.

Multi-layer Paper Bags (Kraft) (25kg±5%):

  • Keep away from water or damp environments as kraft paper can absorb moisture.
  • Palletize the bags for ease of handling and reduce the risk of damage during transit.

AD Star Bags (25kg±5%):

  • These are durable and resistant to tearing; however, avoid sharp objects or edges.
  • Stack appropriately during transport and storage to avoid undue pressure on the bags at the bottom.

Jumbo Bags (850kg to 1 ton):

  • Ensure bags are upright during transportation and storage.
  • Use equipment like forklifts or cranes for handling to avoid physical damage.
  1. Transportation & Storage for Lump Gilsonite:

One-ton Jumbo Bags:

  • Store in a dry place, and ensure the area is free from puncture risks.
  • Use suitable machinery for handling due to the weight.


  • Transportation in bulk containers or dump trucks should be done ensuring that there’s a liner to prevent contamination.
  • During storage, designate a dry, clean area for dumping to avoid contamination.
  1. Transportation & Storage for Micronized Gilsonite:

Laminated Multi-layer Bags (25kg±5%):

  • Palletize and store in a dry environment.
  • Handle with care to prevent tearing, especially since the micronized form can easily spill.

Multi-layer Paper Bags (Kraft) (25kg±5%):

  • Avoid damp areas during storage.
  • Use pallets for transport and storage to ensure stability.

AD Star Bags (25kg±5%):

  • Handle with care, keeping away from sharp objects.
  • Store in a cool, dry environment.

Jumbo Bags (850kg to 1 ton):

  • Always use machinery for transportation and loading/unloading.
  • Keep them upright and ensure they are protected from water or dampness.

In all cases, it’s essential to ensure that Gilsonite, regardless of its form or packaging, is kept in an environment that’s free from contaminants, moisture, and extreme temperature fluctuations.

Gilsonite or Natural Asphalt or Natural Bitumen loaded truck, ready to go

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For more information, please click on each product listed below.

Frequently Asked Questions About GILSONITE

When compared to asphalt emulsion, our Gilsonite Sealer's characteristics are similar, but it is superior at penetrating asphalt for optimal rejuvenation because of its solvent-based oil asphalt sealcoat sealer formulation. Gilsonite sealers can be used for general sealcoating, although its intended use is to repair asphalt that has been damaged by weather or ultraviolet light.


According to their five distinct sources, natural bitumens or Gilsonites are classed appropriately.

1- Bitumens accompanied by layers and other substances in which oil is created.

2- On the ground, the bitumens that accompany the hemiclonal layers and the ends of the aforementioned margins are apparent.

3- Bitumens found at discontinuities and other slopes.

4- Bitumens produced by vast reservoirs that have been fractured by processes like as bending and faulting.

5- Bitumen detected concurrently with the incursion of certain geological events, including volcanic eruptions, salt domes, and igneous intrusions.


Yes, gilsonite is considered a type of fossil fuel. It is a naturally occurring, solid hydrocarbon that forms from the remains of ancient marine plants and animals, much like oil, natural gas, and coal. Over millions of years, heat and pressure in the Earth's crust cause these organic materials to transform into hydrocarbons.

Despite being a type of fossil fuel, gilsonite is somewhat unique due to its solid state and specific physical and chemical properties. It is often found in vertical veins and is mined similarly to how coal is extracted. Its primary uses are industrial, as it is used in applications such as drilling fluids, asphalt modification, paint, and ink production.

Gilsonite is distinguished by its high nitrogen content, which consists mostly of pyrrole, pyridine, and amide functional groups. Additionally, there are phenolic and carbonic groups. The ratio of low oxygen to high nitrogen suggests a high output of nitrogen. This is a property of the wet surface of Gilsonite and its resistance to oxygen free radicals. Gilsonite's average molecular weight is 3000 amu, which is more than that of asphalt products and synthetic resins. This may be a result of Gilsonite's semi-polymeric activity as a modifying resin in polymeric and elastomeric systems. Gilsonite has a propensity for branched and adducted reactions and also interacts with formaldehyde components under certain conditions.

Gilsonite is available in various qualities and is categorized according to its softness. The degree of softness serves as a rough guide for dissolving the adhesive and evaluating the solvent's action. The chemical changes between Gilsonite grades are negligible, while variances in molecular weight and asphaltene/resin concentration are minimal.


Gilsonite, often known as natural asphalt, is a black, viscous, mineral material whose structure consists of dissolved solid hydrocarbons. Bitumen is often discovered in mines. This solid mineral has a relatively high melting point, and its primary sources are in the U.S. states of Colorado and Utah. Recent discoveries in countries such as Colombia and Iran have led to the extraction of a substantial quantity of this material. Although the primary sources of the mineral Bitumen are in the American area, additional sources have recently been identified in countries such as Colombia and Iran.

Gilsonite, or the mineral Bitumen, collected from subterranean mines, resembles obsidian in look and color. In around 25 years after its discovery in the 1860s, Samuel Gilson commercialized this substance as a varnish, electrical insulator, and waterproof compound.


Gilsonite is categorized as a material that is soluble in oil solutions, such as trichloroethylene. This material constitutes the majority of Gilsonite carbon. It also includes a number of other elements, including nitrogen and sulfur, as well as volatile chemicals. Asphaltite is a hard and solid mineral composed of various natural bitumens whose principal constituents, asphaltenes, have very large molecule sizes.

Asphaltite is dark brown to black in hue. They are insoluble in a solution of naphtha, one of the petroleum derivatives, and so need heat to liberate their petroleum content. Despite the fact that Gilsonite is linked to asphalt, asphaltite is chemically and physically distinct from it. For instance, asphaltites often include few or no minerals, while asphalts may contain a rather significant proportion of these substances. Additionally, unlike asphalt, asphaltites do not readily boil.

In terms of specific weight and softening temperature, asphaltites vary significantly amongst one another. Gilsonite is soluble in solvents containing cyclic hydrocarbons, aromatic solvents, and chlorine. This chemical is insoluble in the majority of ketones; however, it is soluble in mixed aromatic solvents with an organic component. Gilsonite is insoluble in alcohol, acetone, and water.


To download the MSDS of Gilsonite, you can click the "INFORMATION REQUEST AND PRODUCT SAMPLE" button below the product photos. We will send you the necessary information as soon as possible, or use the "ANY QUESTION?" form on the bottom right of the page.


To download the TDS of Gilsonite, you can click the "INFORMATION REQUEST AND PRODUCT SAMPLE" button below the product photos. We will send you the necessary information as soon as possible, or use the "ANY QUESTION?" form on the bottom right of the page.


To download the specification PDF of Gilsonite, you can click the "INFORMATION REQUEST AND PRODUCT SAMPLE" button below the product photos. We will send you the necessary information as soon as possible, or use the "ANY QUESTION?" form on the bottom right of the page.


40 Responses

  1. Dear madam, I am interested in understanding how Gilsonite interacts with other components in asphalt to improve its overall performance.

    1. Hello and thank you for your insightful question.

      Gilsonite, a natural asphaltite, exhibits unique characteristics that make it beneficial when mixed with asphalt. When it comes to the interaction of Gilsonite with other components of asphalt, it’s important to understand that Gilsonite is a hydrocarbon material with a high softening point.

      When integrated into the asphalt mix, Gilsonite acts as a performance-enhancing agent. It interacts with the bitumen in the mix, enhancing the bitumen’s properties without compromising its inherent characteristics. It is believed that this interaction leads to an asphalt mix with improved properties such as increased resistance to deformation, reduced temperature susceptibility, and improved durability against aging and weather effects.

      It’s important to mention that the precise interaction mechanisms may vary depending on the specific formulation of the asphalt mix and the Gilsonite grade used. It’s always recommended to work closely with asphalt and Gilsonite professionals to ensure the optimal blend and performance for specific use cases.

      I hope this explanation helps clarify the role of Gilsonite in asphalt performance.

  2. Dear all,

    We represent the company Global Road Solutions and have been purchasing your Gilsonite. Both the quality and your service have met our expectations wonderfully. However, we would appreciate if you could provide some insight on how to dispose of leftover Gilsonite safely and in an environmentally responsible manner?

    1. Hello dear Laura,

      Thank you for your excellent question. Disposal of Gilsonite should be done in compliance with local and national regulations, as it’s crucial to ensure safety and protect the environment.

      Unused Gilsonite should ideally be returned to the supplier for proper disposal or recycling. If that’s not an option, it can be taken to a licensed waste disposal site. It is important not to dispose of Gilsonite in general waste bins or by dumping it in the environment.

      For smaller quantities of residue, it can be solidified with an absorbent material and disposed of as solid waste, again complying with local regulations. In all cases, it’s recommended to seek professional advice if unsure of the correct procedures to follow.

  3. Dear sir or madam,

    We are one of your customers from the company InkStar Production, and we have been purchasing your product, Gilsonite Grade Powder. We are extremely satisfied with both the quality and your services. To ensure that we are handling the product in the best way, could you provide information on how Gilsonite Grade Powdershould be stored to maintain its optimal condition?

    1. Hello Dear Ali,

      Thank you for your good question and for your loyalty to our products. To maintain the optimal condition of Gilsonite Grade Powder, it’s essential to store it properly. Although Gilsonite is not particularly sensitive to environmental factors, it’s generally advised to keep it in a cool, dry place away from direct sunlight.

      The product should be kept in its original packaging until use to prevent any contamination. The storage area should be well-ventilated and free from flammable substances or ignition sources, as Gilsonite can create dust that may pose a fire hazard in specific conditions.

      We hope this information assists you in your operations. Should you need more detailed information or have any other queries, don’t hesitate to contact us.

  4. Hi there
    We tried to drill through Gilsonite, but after a couple of meters the drill string got stuck and we were not able to remove it.
    Is there a special drill mud for drilling Gilsonite?
    Thank you

    1. Hello,

      Thank you for reaching out with your question about drilling through Gilsonite. We understand the challenges you’ve faced, and we’re here to help.

      A suitable drilling mud for drilling through Gilsonite should have the following characteristics:

      Lubrication: The drilling mud should provide good lubrication to minimize the torque and drag, reducing the risk of the drill string getting stuck.

      Inhibition: An inhibitive mud system helps to prevent the swelling or dispersion of the Gilsonite, minimizing the chance of sticking.

      Filtration control: Good filtration control is essential to maintain wellbore stability and minimize the risk of stuck pipe.

      One option to consider is an oil-based mud (OBM) or synthetic-based mud (SBM), as they provide excellent lubrication and inhibition properties. These types of muds are less prone to interacting with Gilsonite, reducing the chances of stuck pipe. Additionally, they offer better filtration control compared to water-based muds (WBM).

      However, environmental and economic considerations may limit the use of oil-based or synthetic-based muds in certain regions. In such cases, an inhibitive water-based mud (WBM) with proper additives can be used. Potassium-based inhibitors such as potassium chloride (KCl) or potassium formate can be added to improve the inhibitive properties of the WBM. Other additives like lubricants and shale stabilizers may also be used to enhance drilling performance in Gilsonite formations.

      It is essential to work closely with a drilling fluids engineer to design and optimize the mud system for your specific drilling conditions and objectives. They can help you select the right mud system and additives to minimize the challenges associated with drilling through Gilsonite formations.

  5. I came across your website while searching for some information about Gilsonite, and I have a question that I hope you can help me with.

    Question: Is Gilsonite a rare mineral?

    Thank you for your response.

    1. Thank you for your comment.

      Gilsonite, also known as uintaite, is considered a relatively rare mineral. It is primarily found in the Iran and Uinta Basin in Utah, United States, although it can also be found in other locations around the world. The geological conditions required for the formation of Gilsonite are quite specific, which contributes to its limited occurrence. Due to its scarcity, Gilsonite holds value as a unique natural resource.

      If you have any further questions, feel free to ask.

  6. If you desire to grow your experience only keep visiting this web page and be updated with the latest information posted here.

    1. Thank you for your comment and for visiting this web page. I’m glad to hear that you find the information here useful and informative.

      Keeping up with the latest information and trends is important for personal and professional growth, and I encourage everyone to continue learning and expanding their knowledge.

      If you have any questions or suggestions for future topics, please feel free to let me know. Thank you again for your support!

  7. Appreciating the commitment you put into your blog and detailed information you provide. It’s nice to come across a blog every once in a while that isn’t the same unwanted rehashed information. Wonderful read!
    I’ve bookmarked your site and I’m including your RSS feeds to my Google account.

    1. Thank you so much for your kind words! It means a lot to me to hear that you appreciate the content on my blog. I always try my best to provide detailed and informative information that my readers will find useful.

      I’m glad to hear that you’ve bookmarked my site and included my RSS feeds to your Google account. That’s a great way to stay up-to-date on the latest content I publish. If you have any questions or suggestions for future topics, please feel free to reach out to me. Thank you for your support!

  8. Hello all
    Is it possible to manufacture tires for heavy vehicles with Gilsonite?

    1. Thank you for your comment
      Yes, one of the main uses of Gilsonite in the industry is in the tire industry, When combined with carbon black in the manufacturing of rubber, the inclusion of gilsonite, also known as natural asphalt, results in a significantly more reinforced substance. This is due to the fact that gilsonite facilitates the absorption of carbon black into natural rubber when it is combined with the other components. Because of its high carbon content, gilsonite performs well in circumstances where carbon black is utilized in hot mixtures. Furthermore, due of gilsonite’s unique features, the resultant rubber will have greater abrasion wear strengths, making it perfect for usage in the tire industry. Natural asphalt serves as the optimum binder when utilized in the creation of synthetic rubber or in combinations including natural rubber, offering greater results at a cheaper cost than alternative adhesive solutions.

    1. As a raw material, gilsonite may be used to create asphalt pavement sealant, which can then be processed into fine bituminous material in a sludge combination.
      • Gilsonite Sealer has unique qualities that allow excellent adherence to bituminous surfaces.
      • Sealers prevent against cracking, which is particularly important during freeze/thaw cycles.
      • The qualities of gilsonite guarantee the longevity of asphalt and emulsion coatings.
      • Gilsonite Sealer’s nature regenerates the molecular connections in the paver surface and assists in color effects, resulting in a sharp, glossy black look.
      • Gilsonite Sealer is commonly utilized in driveways, streets, and roads, as well as heavy traffic roadways such as highways, due to its unique qualities.
      • Gilsonite Sealing Coating has been found to increase the life of pavement by up to 25 years when applied every one to two years.
      • Gilsonite may also be used to make fresh asphalt by combining it with asphalt paving debris.

  9. Hello and greetings
    Can Gilsonite be used to reduce steel impurities in the production process?

    1. Yes, this is one of the uses of gilsonite in the steel industry, we will provide you with a more complete explanation below:
      Gilsonite is a component of various additives used in the steel making process. It is used as an ingredient in the production of limestone, lime, magnesium, and calcium carbide. These additives remove impurities from the liquid steel, such as sulfur, silica, and phosphorus, and transfer them to the still-liquid layer of liquid slag. Gilsonite, as a component of Steel Making Additives, is responsible for a variety of duties. When applied to molten steel, Gilsonite promotes additive mixing, allowing chemical processes to occur that transport impurities to the molten slag layer. First, at 1900°F, Gilsonite is roughly 75% volatile. It enhances the mixing of the additives when put to steel. Following that, the volatiles emitted include a substantial quantity of lustrous carbon, which further lowers the iron oxide to steel. Even though CO is responsible for the great majority of the indirect reduction of Fe3+, some of it must still be reduced directly by elemental carbon. Finally, the component of Gilsonite that does not volatilize is a highly ordered asphaltene structure that is nearly totally made of carbon. This increases the quantity of carbon in the steel.

  10. Hello;
    We are gilsonite supplier for drilling companies in Indonesia, as you know the depth of wells in Indonesia is very high and therefore there is very high heat, can you provide gilsonite with high temperature application?

    1. Hello,
      We are happy to meet you.
      Yes, apart from the standard types and grades, we optimize Gilsonite according to the customer’s needs, and we can also provide Gilsonite for deep wells with high temperatures.

  11. Thank you for your very useful information, in what industries can Gilsonite be used?

  12. Dear Manager
    We have bought Gilsonite from you several times for cementing the oil wells we are drilling and we still have active orders.
    We would like to thank you for the product that meets our specifications and for your very good service
    Frederick Richard, Supply Manager, Black Gold Drilling Company.

    1. Respectfully, while thanking you for your comment, it is an honor for us to cooperate with your company and we hope that this cooperation will continue.

  13. Petro Naft Company’s respected Sales Manager
    We buy Gilsonite from you for all our foundries, and we are very satisfied. We hope to continue our cooperation.
    Director of the support department of Cavus Holding.
    Mohamd Kazemi

    1. Greetings and Regards
      Thank you very much for your comment, we are glad that you are satisfied with the purchase from us, we also believe in a long-term cooperation.

    1. Hello,
      Your comment is appreciated.
      Pavement sealer is a Seal Coating compound that is used for driveway sealer. Sealer is a liquid coating that protects the surface. Pavement Sealer is applied to the surface of asphalt pavements to preserve them against environmental deterioration. Gilsonite may be used to create asphalt pavement sealers as a raw ingredient liquidized into a bituminous soft substance in a suspension mix. Gilsonite Sealer has unique properties that allow strong binding with the asphalt bituminous component and crucial protection against cracking, particularly during the freeze/thaw cycle.

  14. We are an ink manufacturing company, please advise what grade of gilsonite is suitable for making ink?
    Guide us to place an order.

    1. Thank you for your comment
      Hello and greetings
      For ink production, the best grade of gilsonite is the grade that contains less ash and is in powder form, you can get more complete information by clicking on the phrase below.
      To place an order through one of the ways of communicating with us, you can inform us of your order.

    1. Thank you for your good question
      Yes, Gilsonite is used to protect pipes from corrosion and also as an additive in pipe isolators, both of which contribute significantly to pipe life extension. Gilsonite is a kind of resin that may be used to waterproof objects in a variety of different industries.

  15. I read somewhere that gilsonite has a meteorite origin ( gilsonite meteorite ), is this true?

    1. Thank you for your comment.
      Gilsonite does not actually have a meteorite origin.
      Gilsonite is created by hardening and oxidizing crude oil underground over time. The surface of Gilsonite is smooth and shiny, and the oil turns into a brownish black solid due to the pressure of the earth’s layers. Heat causes this material to soften and flow. Natural bitumen is the byproduct of oil evaporation. Oil has collected over many years in ponds surrounded by impermeable materials such as plaster, stone, and so on after migrating through the earth’s cracks and layers. Gilsonite is formed by evaporating oil volatiles under pressure. A natural bitumen or asphalt lake is formed by the evaporation of oil from an oil pond or lake.

  16. With respect
    We are a road construction company in Malaysia, please tell me what properties Gilsonite improves on bitumen and what is the minimum possible order quantity?

    1. Hello and greetings,
      Thank you for your question.
      Some of the advantages of using Gilsonite in bitumen (asphalt) are as follows, and the minimum order is one container.
      • High levels of strength and endurance.
      • Outstanding performance in terms of deformation.
      • The pavement’s depth has been reduced.
      • Cold temperature resistance has enhanced.
      • Superior resistance to the eroding impacts of water.
      • Gilsonite contributes to the durability of roadways, allowing them to be utilized for extended periods of time.
      • Making longer-lasting pavement is good for the environment. Restoring pavements using recycled asphalt rather than totally replacing them has been demonstrated to result in a significant reduction in both the quantity of energy utilized and the number of resources required.
      • Natural antioxidant.
      • It revitalizes the pavement.
      • It has strong adhesive properties.
      • Outstanding fading resistance and overall appearance.

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