Bitumen 75/25

Bitumen 75/25 is a high-quality air-blown (oxidized) bitumen produced through a controlled process of blowing hot air through straight-run bitumen at elevated temperatures, resulting in a product with a significantly higher softening point and lower penetration compared to its feedstock. 

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    What is Bitumen 75/25?

    With a softening point of 75–85°C and a penetration of 20–30 dmm, this grade offers an excellent balance between hardness and residual flexibility — making it particularly well-suited for roofing felt manufacturing, bituminous adhesives, and rigid insulation board lamination.  

    As a premium UAE-based oxidized bitumen supplier, we source this grade from world-class refineries and subject it to rigorous quality testing before dispatch. Bitumen 75/25 is used extensively across Europe, Asia, the Middle East, and Africa by roofing membrane manufacturers, adhesive formulators, and EPC contractors seeking a reliable, cost-effective waterproofing binder.

    Applications of Bitumen 75/25

    • Roofing felts, bituminous felt underlay, and saturant base coat for roof decks
    Bituminous adhesives for mineral wool and polystyrene insulation boards
    Noise-damping underbody coatings for automotive and rail applications
    Protective coatings for buried concrete and masonry foundations

    Advantages of Bitumen 200/300

    EN 12591 (European Standard) classifies penetration grade bitumen by its penetration value and softening point range. Black Rock Bitumen supplies all major EN grades, tested and certified for export from our Dubai logistics hub.

    Elevated softening point (75–85°C) prevents flow or deformation in warm roofing environments.
    Low penetration value (20–30 dmm) provides a firm, hard matrix that resists indentation and creep
    Outstanding adhesion to fibreglass, polyester, jute, and mineral-coated substrates used in roofing felts
    High resistance to UV oxidation and weathering aging, extending service life of roofing systems.
    Compatible with SBS/APP polymers for upgrade to polymer-modified bituminous membranes.
    Good processability at 180–200°C without significant fume emission above safety thresholds.

    Black Rock Oxidized Bitumen 75/25

    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 75/25 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
    • 35
    • 50
    • Softening Point
    • ASTM D36
    • °C
    • 52
    • 60
    • Ductility at 25 °C
    • ASTM D113
    • cm
    • 100
    • –
    • 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 75/25 MSDS

    pdf

    Bitumen 75/25 Safety Data Sheet

    Download
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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 75/25 offers high softening point, enhanced durability, and reliable performance for industrial waterproofing applications.

      It is most widely used in the manufacture of roofing felts, bituminous adhesives for insulation boards, and vapour control layer laminates in commercial and residential roofing systems.

      How does oxidized bitumen differ from penetration-grade bitumen?

      Oxidized (air-blown) bitumen is produced by passing hot air through straight-run bitumen. This process increases the softening point and reduces the penetration, creating a harder, more heat-resistant product with reduced temperature susceptibility compared to conventional paving-grade bitumen.

      The first number (75) denotes the nominal softening point in °C (actual range 75–85°C), and the second number (25) denotes the nominal penetration in 0.1 mm units (actual range 20–30 dmm).

      Yes. Its 75–85°C softening point means the membrane will not soften or flow under typical roof surface temperatures encountered in hot climates (Middle East, South Asia, Africa), where roof surface temperatures can reach 70–75°C in summer.

      Yes. It is compatible with SBS (styrene-butadiene-styrene) and APP (atactic polypropylene) modifiers to produce polymer-modified bituminous membranes with enhanced elasticity and cold-crack resistance.

      MOQs vary by packaging type and destination port. Contact our sales team for a customised quotation based on your volume, required grade, and delivery location.

      Yes. A full Technical Data Sheet (TDS), Safety Data Sheet (SDS/MSDS), and Certificate of Analysis (COA) are provided with every order.

      Our Bitumen 75/25 is produced in compliance with ASTM D312, ASTM D36, BS EN 13304, and ISO 4630. ISO 9001:2015 QMS certification is maintained at our supply facility.

      Under proper storage conditions — kept in sealed packaging, away from direct sunlight and extreme moisture, at ambient temperature — the product retains its specification for a minimum of 12–18 months from date of manufacture.

      Yes. For bulk orders (typically > 20 MT), we can formulate custom grades with adjusted softening point or penetration targets. Contact our technical team to discuss your requirements.