Bitumen 85/35

Oxidized Bitumen Grade 85/35 is a durable air-blown bitumen with a higher softening point and controlled penetration, delivering excellent thermal stability, hardness, and long-lasting performance for roofing, waterproofing, and industrial protection applications.

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    What is Bitumen 200/300?

    Bitumen 200/300 is a very soft penetration grade bitumen with a penetration range of 200–300, making it one of the softest grades available.

    It is specifically designed for applications requiring high flexibility, low stiffness, and excellent resistance to thermal cracking, especially in cold climates and specialized industrial uses.

    Like all penetration grades, it exhibits thermoplastic behavior, meaning it softens at higher temperatures and hardens when cooled—critical for pavement performance.

    Applications of Bitumen 85/35

    Torch-on APP bituminous roofing membranes (cap sheets and underlay)
    Bridge deck waterproofing and wearing course bonding layers
    Multi-layer hot-applied waterproofing for underground car parks and podium decks
    Industrial floor and workshop slab waterproofing membrane

    Advantages of Bitumen 85/35

    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.

    Softening point of 85–95°C provides excellent heat stability on flat and low-pitch roofs in tropical and arid climates
    Penetration of 30–40 dmm delivers balanced flexibility — resists cold cracking without compromising heat resistance
    Excellent compatibility with APP (atactic polypropylene) modifiers for polymer-modified membrane production
    Strong self-adhesion and bonding to concrete, steel, and mineral substrates when torch-applied at correct temperature
    Outstanding waterproofing performance across the full membrane life cycle
    Good UV and ozone resistance compared to softer bitumen grades

    Black Rock Bitumen 85/35

    Essential Details

    Description

    • Type
    • Penetration Grade Bitumen
    • Feed Stock
    • Crude Oil
    • HS Code
    • 27132000
    • Spot Test
    • Negative
    • Inspection
    • Included
    • Delivery Term
    • FOB-CFR-CIF
    • Production and Loading Period
    • FOB-CFR-CIF
    • Payment Term
    • TT Method FOB Delivery: 30% advance and balance against customs documents CFR/CIF Delivery: 30% advance and balance against B/L daft
    • Marking
    • Marking can be customized based on customer request
    • Supply Capacity
    • 50,000 MT/Month
    • Packing
    • -New Steel Drum -Jumbo Bag

    Bitumen 85/35 Specification

    Oxidized Bitumen 85/35 Specifications

    Essential Details

    Test Method

    Unit

    Min.

    Max.

    • Specific Gravity at 25 °C
    • ASTM D70 / EN 15326
    • Kg/Cm³
    • 1.05 approx
    • 1.06
    • Penetration at 25 °C, 100g, 5s
    • ASTM D5
    • 0.1mm
    • 35
    • 45
    • Softening Point
    • ASTM D36 / EN 1427
    • °C
    • 52
    • 60
    • Ductility at 25 °C
    • ASTM D113
    • cm
    • 85
    • 95
    • Loss on Heating
    • ASTM D6 / EN 13303
    • wt.%
    • –
    • 0.2
    • Drop in Penetration after Heating
    • ASTM D5
    • %
    • –
    • 20
    • Flash Point
    • ASTM D92 / EN ISO 2592
    • °C
    • 250
    • –
    • Solubility in Trichloroethylene
    • ASTM D4 / EN 12592
    • wt.%
    • 99
    • –
    • Spot Test
    • ASHTO T102
    • Negative

    Bitumen 85/35 MSDS

    pdf

    Bitumen 85/35 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 85/35 offers high softening point, durability, and thermal stability for roofing and waterproofing applications.

      It is primarily used for torch-on APP bituminous roofing membranes, bridge deck waterproofing, and multi-layer flat roof waterproofing systems in hot and tropical climates.

      How does 85/35 differ from 85/25?

      The 85/35 grade has a higher penetration (30–40 vs 20–30 dmm), providing better low-temperature flexibility. Both share the same 85–95°C softening point. 85/35 is preferred for membranes needing flexibility; 85/25 for hard industrial coatings.

      Yes. The 85°C minimum softening point comfortably satisfies EN 14695 requirements for oxidized bitumen in bridge deck waterproofing applications.

      Yes. Bitumen 85/35 exhibits excellent compatibility with APP (atactic polypropylene) and is the standard base bitumen for many torch-on APP membrane formulations.

      Recommended torch application temperature is 200–220°C. The bitumen should be fully melted and flow visibly before bonding to the substrate.

      Yes. We supply Bitumen 85/35 to customers in UAE, Saudi Arabia, Qatar, India, Pakistan, Bangladesh, Egypt, Nigeria, and many other countries from our UAE export hub.

      Yes. Sample quantities (typically 25–50 kg) are available for new customers undertaking compatibility and processing trials.

      Membrane manufacturers typically prefer 25 kg PE bags on pallets for easy handling in production facilities. Large-volume producers may opt for hot-liquid bulk tanker supply.

      REACH compliance documentation is available for EU-bound shipments. Contact our technical team for the relevant SVHC declaration.

      ASTM D312 Type IV, BS EN 13304, and our own internal specification that is benchmarked against major international membrane manufacturer requirements.