CSS-1 Bitumen Emulsion Supplier — Slow Setting Cationic Emulsion

Black Rock Bitumen supplies CSS-1 bitumen emulsion, a cationic slow-setting emulsion for applications requiring deep penetration, extended workability, and gradual curing. Manufactured to ASTM D2397 / AASHTO M208 standards, CSS-1 is ideal for prime coating, soil stabilization, and low-traffic road construction where slow breaking is critical.

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What is CSS-1 Bitumen Emulsion?

CSS-1 Bitumen Emulsion is a cationic slow-setting emulsion formulated for applications requiring extended mixing time and low curing rates. Its positively charged bitumen droplets bond effectively with a wide range of aggregates, including dusty, dry, or coarse surfaces, ensuring thorough penetration and workability in road construction projects of all scales.

CSS-1 Bitumen Emulsion is widely used for fog sealing, soil and base stabilization, prime coating, and slurry seal applications on granular surfaces. Its slow-setting nature makes it ideal for low-traffic areas, shoulder construction, and road rehabilitation projects where gradual curing supports deeper penetration and lasting bonding across varied terrains.

Black Rock Bitumen supplies CSS-1 Bitumen Emulsion manufactured to ASTM D2397 and AASHTO M208 standards, ensuring consistent bitumen content, viscosity, and setting performance in every batch. Sourced from certified facilities and shipped through our Dubai logistics hub, our CSS-1 Bitumen Emulsion delivers dependable, export-grade quality worldwide

Applications of CSS-1 Bitumen Emulsion

Prime Coat

Penetrates granular base layers and prepares the surface for asphalt overlay.

Soil Stabilization

Improves strength and durability of weak subgrades.

Fog Seal & Dust Control

Binds loose particles and reduces dust on unpaved roads.

Slurry Seal & Surface Treatment

Ensures proper mixing with fine aggregates and extended workability.

Advantages of CSS-1

Cost Efficient

Reduces energy use, labor, and maintenance costs.

Better Workability

Provides sufficient time for uniform spreading.

Cold Application

No heating required, ensuring safer operations.

Strong Adhesion

Bonds well with aggregates and granular surfaces.

Slow Setting

Allows controlled breaking and easy application.

Good Penetration

Effectively penetrates base layers for strong bonding.

Black Rock CSS-1 Bitumen Emulsion

Essential Details

Description

  • Type
  • Anionic Slow-Setting Bitumen Emulsion (CSS-1)
  • Feed Stock
  • Bitumen (Penetration Grade 100/120 or similar), Water, Anionic Emulsifier
  • HS Code
  • 27150000
  • Spot Test
  • Negative
  • Inspection
  • Included
  • Delivery Term
  • FOB-CFR-CIF
  • Production and Loading Period
  • 2–4 weeks after order confirmation
  • 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
  • 20,000 MT/Month
  • Packing
  • - Bulk in Tanker - IBC Tank - New Steel Drum

CSS-1 Specification

CSS-1 Specifications

Essential Details

Test Method

Unit

Min.

Max.

  • Specific Gravity at 25 °C
  • ASTM D70
  • –
  • 1.01
  • 1.05
  • Penetration at 25 °C, 100g, 5s
  • ASTM D5
  • 0.1mm
  • 100
  • 250
  • Softening Point
  • ASTM D36
  • °C
  • 40
  • 55
  • Ductility at 25 °C
  • ASTM D113
  • cm
  • 100
  • –
  • Loss on Heating
  • ASTM D6
  • wt.%
  • –
  • 1.0
  • Drop in Penetration after Heating
  • ASTM D5
  • %
  • –
  • 40
  • Flash Point
  • ASTM D92
  • °C
  • 230
  • –
  • Solubility in Trichloroethylene
  • ASTM D2042
  • wt.%
  • 97.5
  • –
  • Spot Test
  • ASHTO T102
  • Negative

CSS-1 MSDS

pdf

CSS-1 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.

Get in Touch for Bitumen Orders & Inquiries

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    Tons Supplied

    0

    Client Retention Rate

    0

    Specialized Bitumen Grades

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    Successful Shipments

    Shipping & Delivery

    Port of Loading

    Jebel Ali, UAE

    Delivery Terms

    FOB, CIF, CFR

    Inspection

    SGS / Bureau Veritas available

    Lead Time

    2–4 weeks depending on order volume
    Our faqs

    Frequently Asked Questions.

    CSS-1 is a cationic slow-setting bitumen emulsion that provides extended mixing time before breaking, making it suitable for applications requiring thorough aggregate coating.

    It is widely used in slurry seals, micro-surfacing, cold mix asphalt, and soil and aggregate stabilization.

    CSS-1 breaks slowly, allowing sufficient time for mixing, transporting, and placing the mix without premature setting.

    Benefits include excellent workability, uniform aggregate coating, strong adhesion to aggregates, and suitability for cold, eco-friendly application.

    CSS-1 should be stored in clean, temperature-controlled tanks, kept above 5°C, and protected from contamination to maintain emulsion stability.

    CSS-1 is a standard-viscosity slow-setting emulsion, while CSS-1h has higher viscosity and improved adhesion, making it better suited to demanding applications, hotter climates, and mixes requiring greater stability.

    Yes, CSS-1's slow-breaking, deep-penetrating properties make it effective for improving the strength and durability of weak subgrades in soil stabilization work.

    CSS-1 is supplied via bulk tanker, IBC tanks, or new steel drums, with a standard supply capacity of up to 20,000 MT/month and typical production/loading of 2–4 weeks after order confirmation.