Bitumen 90/25

Oxidized Bitumen Grade 90/25 is a high-softening, low-penetration material ideal for waterproofing, roofing, insulation, pipe coating, and industrial applications requiring durability and heat resistance performance.

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    What is Bitumen 90/25?

    Bitumen 90/25 occupies a critical performance position within the 90-series: with a softening point of 90–100°C and a penetration of 20–30 dmm, it delivers the very high thermal resistance of the 90-series combined with a penetration level that allows it to be used for both industrial coating and high-performance roofing applications.

    This dual utility makes it one of the most versatile grades in the hard oxidized bitumen family.  For roofing membrane manufacturers targeting the hottest climate zones — where roof surface temperatures can approach 80°C — and who need the absolute maximum softening point available in a standard oxidized bitumen grade, Bitumen 90/25 is the definitive specification.

    It is also widely used as the primary binder in industrial equipment protective coatings, high-temperature pipe systems, and as a base bitumen where very high APP or SBS polymer loadings require a hard base matrix to control final membrane softening point.

    Applications of Bitumen 90/25

    Hot-Climate Roofing

    Premium torch-on APP roofing membranes for extreme hot-climate markets (Gulf, MENA, Sahara region)

    Flat Roof Waterproofing

    High-performance flat roof waterproofing for hospitals, warehouses, and logistics centres

    Pipeline Coatings

    Industrial pipeline anti-corrosion coating in high-temperature buried service

    Industrial Coatings

    Protective coating for industrial structures in hot and arid environments

    Advantages of Bitumen 90/25

    Bitumen 90/25 serves a wide spectrum of construction, industrial, and infrastructure 

    Extreme Heat Performance

    Highest practical softening point for roofing-grade oxidized bitumen (90–100°C) — premier grade for extreme climate membrane systems

    Balanced Hardness

    Penetration of 20–30 dmm balances the hardness needed for roofing stability with processability in coating and membrane applications

    Thermal Stability

    Exceptional thermal stability: roof membrane will not soften, blister, or flow even on the most intensely sun-heated surfaces

    UV Resistance

    Superior resistance to UV degradation and atmospheric oxidation

    Processing Efficiency

    Superior resistance to UV degradation and atmospheric oxidation

    Strong Adhesion

    Excellent coating and impregnation behaviour at 190–210°C processing temperatures

    Black Rock Oxidized Bitumen 90/25

    Essential Details

    Description

    • Type
    • Oxidized Bitumen
    • Feed Stock
    • Crude Oil
    • HS Code
    • 27132000
    • Spot Test
    • Negative
    • Inspection
    • Excluded
    • Delivery Term
    • FOB-CFR-CIF
    • Production and Loading Period
    • Maximum 3 Weeks
    • Payment Term
    • TT Method FOB Delivery: 30% advance and balance against customs documents
    • Marking
    • Marking can be customized based on customer request
    • Supply Capacity
    • 50,000 MT/Month
    • Packing
    • -Carton -Poly Amide -Polyester -Economical 1350 KG carton

    Bitumen 90/25 Specification

    Oxidized Bitumen Grade 75/25 Specifications

    Essential Details

    Test Method

    Unit

    Min.

    Max.

    • Specific Gravity at 25 °C
    • ASTM D70
    • –
    • 1.01
    • 1.06
    • Penetration at 25 °C, 100g, 5s
    • ASTM D5
    • 0.1mm
    • 10
    • 30
    • Softening Point
    • ASTM D36
    • °C
    • 80
    • 100
    • Ductility at 25 °C
    • ASTM D113
    • cm
    • 1.5
    • –
    • Loss on Heating
    • ASTM D6
    • wt.%
    • –
    • 0.2
    • Drop in Penetration after Heating
    • ASTM D5
    • %
    • –
    • 20
    • Flash Point
    • ASTM D5
    • °C
    • 250
    • –
    • Solubility in Trichloroethylene
    • ASTM D2042
    • wt.%
    • 80% min
    • –
    • Spot Test
    • ASHTO T102
    • Negative

    Bitumen 90/25 MSDS

    pdf

    Bitumen 90/25 Safety Data Sheet

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    Our Packaging

    We deliver bitumen in versatile, secure options: economical Jumbo Bags, robust steel Drums, or high-volume Bulk Containers (Bitutainers/Bituboxes).

    Terms of Payment

    Payment Terms for Smooth Transactions

    TT Method

    The buyer pays 30% advance, with the balance against B/L draft (CFR) or customs docs (FOB).

    LC at Sight

    100% irrevocable, non-transferable, confirmed LC at sight, subject to bank approval by Black Rock Bitumen.

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      Our faqs

      Frequently Asked Questions.

      Oxidized Bitumen Grade 90/25 is a hard, high-softening bitumen designed for industrial waterproofing, insulation, and corrosion-resistant applications.

      Oxidized Bitumen 90/25 is air-blown bitumen with a softening point of 90°C and penetration of 25, offering high heat resistance and durability.

      What are the main applications of Bitumen 90/25?

      It is widely used in roofing membranes, waterproofing systems, pipe coating, insulation boards, and industrial sealing applications.

      Grade 90/25 provides a balanced combination of hardness and flexibility, making it ideal for moderate to high-temperature environments.

      Yes. Its high softening point ensures excellent thermal stability and resistance to deformation in hot and extreme climate conditions.

      It is commonly supplied in solid form, packed in cartons, bags, or drums, and can also be provided in bulk upon request.

      Coated surfaces should not continuously exceed 80–85°C. The 90–100°C softening point provides a safe performance margin above this level.

      Yes. Bitumen 90/25 complies with ASTM D312 and BS EN 13304 specification for industrial oxidized bitumen.

      200–220°C for torch application. Ensure full melt and flow of the lower membrane surface before bonding.

      Yes. We regularly export to membrane manufacturers in Saudi Arabia, UAE, Egypt, Morocco, Algeria, Tunisia, and West Africa.

      Yes. Hot tanker supply at 185–200°C is available for large membrane production facilities.