Oxidized Bitumen 90/40 – Premium Blown Asphalt
RAHA Oil is a trusted supplier and exporter of Oxidized Bitumen 90/40, based in Dubai, United Arab Emirates, serving industrial, construction, and trading customers across the UAE, GCC, Africa, Asia, and worldwide. Our Oxidized Bitumen 90/40 is manufactured to international standards and offers superior thermal performance, adhesion, and durability.
What Is Oxidized Bitumen 90/40
Oxidized Bitumen 90/40 is a high-quality blown asphalt produced by passing hot air through selected petroleum bitumen (usually 60/70 grade) under controlled conditions without any catalyst. This air-blowing process raises its softening point, enhances stability during melting, and provides stronger rubber-like properties compared to penetration grade bitumen.
The grade “90/40” indicates the midpoint of its softening point (85–95°C) and penetration range (35–45, in tenths of a millimeter), giving the material an ideal balance of rigidity and flexibility for industrial applications. Oxidized Bitumen 90/40 is a solid or semi-solid black material that becomes liquid when heated, and is widely used for waterproofing, coatings, adhesives, insulation, and various construction and industrial applications.
It is produced through continuous or staggered blowing processes, with softening point measured according to ASTM D36 and penetration according to ASTM D5/IP49.
Applications of Oxidized Bitumen 90/40
Oxidized Bitumen 90/40 is widely used across construction, industrial, and specialty applications:
Construction and Waterproofing: Roofing felts, waterproof membranes, foundation damp-proofing, and structural sealing.
Protective and Industrial Coatings: Pipe coating and corrosion protection, tank linings, asphalt-based paints, mastics, and sealants.
Civil Works and Pavements: Joint fillers, crack sealing, Portland cement pavement protection, and asphalt modifiers.
Specialty Applications: Automotive undercoating (waterproofing, dust, and noise protection), adhesives in electrical laminates, synthetic turf base, and industrial flooring.
This grade is also used across chemical, fuel, paint, lacquer, varnish, paper-pulp-board, and textile processing industries.
Oxidized Bitumen 90/40 vs. Other Oxidized Grades
Oxidized Bitumen 90/40 sits in the mid-range of the Oxidized Bitumen family, with a softening point (85–95°C) lower than harder grades like 110/30 or 115/15, but higher than softer grades such as 75/25. Its balanced penetration range (35–45) and ductility (5.5 cm min notably higher than harder grades) give it more workability, making it a practical choice for applications needing both thermal resistance and easier processing.
Common Industries Using Oxidized Bitumen 90/40
This grade is widely used across the roofing and waterproofing industry, pipe coating and corrosion protection, and automotive undercoating manufacturing. Its higher ductility compared to harder oxidized grades also makes it a popular choice for adhesive and mastic production, as well as flexible sealant applications where some elasticity is needed alongside strong adhesion.
Key Benefits Oxidized Bitumen 90/40
- Excellent thermal and chemical stability for hot environments
- High softening point with improved resistance to deformation
- Strong adhesion and bonding for coatings and sealants
- Enhanced waterproofing and protective performance
- Durable in industrial and construction use cases
Safety Guidelines
Proper heating and handling are crucial:
Heating: Oxidized Bitumen 90/40 should be gradually heated (typically up to 220–230°C) before application.
Safety: Wear heat-resistant gloves, goggles, and protective clothing. Avoid overheating, which can degrade properties and release fumes.
Storage: Store in a cool, dry place away from open flames. Follow MSDS instructions for safe storage and handling.
Technical Advantages of Blown Asphalt 90/40
- Durability
- Flexibility
- Water-Resistant
- Chemical Stability
Compared to paving grade bitumen: reduced temperature susceptibility, a more solid nature at ambient temperatures, and a high penetration index.
Storage and Handling Recommendations
Oxidized Bitumen 90/40 should be stored in a cool, dry area away from direct sunlight and open flames. Its moderate softening point allows for relatively simple storage compared to harder oxidized grades, though it should still be broken into manageable pieces before heating to ensure even, controlled temperature distribution.
Frequently Asked Questions - FAQ
It is used mainly in roofing, waterproofing, pipe coating, industrial coatings, and automotive undercoating.
Oxidized Bitumen 90/40 has a softening point of 85–95°C and a penetration value of 35–45 (0.1 mm), as confirmed by ASTM D36 and ASTM D5 testing.
It should be gradually heated to approximately 220–230°C, avoiding overheating which can degrade its properties and release fumes.
Raha Oil supplies Oxidized Bitumen 90/40 in 20–50 kg Kraft/polyamide bags, 25 kg carton boxes, 150–200 kg steel drums, and palletized or bulk container loading
Yes, full technical documents including TDS, COA, and MSDS are provided.
Oxidized Bitumen 90/40 — Technical Data Sheet
ASTM Standard| Property | Test Method | Unit | Specification | |
|---|---|---|---|---|
| Specific Gravity @ 25/25°C | ASTM D70 | kg/cm³ | 1.05 approx | |
| Penetration @ 25°C | ASTM D5 | 0.1 mm | 35–45 | |
| Softening Point | ASTM D36 | °C | 85–95 | |
| Ductility @ 25°C | ASTM D113 | cm | 5.5 min | |
| Loss on Heating (wt) | ASTM D6 | % | 0.2 max | |
| Flash Point | ASTM D92 | °C | 250 min | |
| Solubility in CS2 (wt) | ASTM D4 | % | 99.5 max | |
| Spot Test | AASHTO T102 | – | Negative | |
Source: Raha Group official Technical Data Sheet, Oxidized Bitumen 90/40 (ASTM standard). Values represent standard product specification; actual batch results are confirmed via Certificate of Analysis (COA) issued with each shipment.
Why Choose Raha Oil for Oxidized Bitumen 90/40
Raha Oil manufactures Oxidized Bitumen 90/40 from Dubai, UAE, with production and testing following ASTM standards. Quality is verified through internal testing before every shipment, with full documentation including TDS, COA, and MSDS provided on request.
With flexible packing from 20 kg Kraft bags to 200 kg steel drums and an established export track record across the GCC, Africa, and Asia, Raha Oil supports both trial orders and large-scale industrial supply requirements.
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