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Bitumen 85/25

Bitumen 85/25 is a specialized grade of oxidized bitumen, commonly used in industrial applications requiring a semi-solid, highly durable material with excellent adhesive and waterproofing properties. With a softening point of approximately 85°C and a penetration value of 25 dmm (tenths of a millimeter), this grade offers superior hardness and thermal stability, making it ideal for projects that demand resistance to high temperatures and prolonged exposure to environmental elements. It also demonstrates excellent resistance to both oxidation and aging, ensuring it maintains its performance over extended periods, even under harsh conditions.


Bitumen 85/25 is widely utilized in applications such as roofing felt production, waterproofing membranes, pipe coatings, insulation, and industrial flooring. Its resistance to deformation under load and its strong binding properties ensure long-lasting performance in challenging environments. Additionally, it provides excellent resistance to water and chemical exposure, making it a preferred choice for infrastructure requiring reliable and durable sealing solutions. Its ability to maintain its structural integrity even in extreme weather conditions further enhances its appeal for demanding industrial applications. Produced through an advanced oxidation process, Bitumen 85/25 meets stringent quality standards, ensuring consistency and reliability across diverse industrial uses. Its versatility and robust characteristics make it an indispensable material for construction and industrial projects worldwide.


Bitumen 85/100
Characteristics Unit Specification Test Method
Penetration @ 25 °C 0.1 mm 60-70 ASTM D-5
Specific gravity @ 25 °C gr/cm3 1.01-1.060 ASTM D-70
Softening Point °C 46-56 ASTM D-36
Ductility @ 25 °C Cm 100 Min ASTM D-113
Loss on heating % wt 0.2 Max ASTM D-6
Drop in penetration after heating % 20 Max ASTM D-6 & D-5
Flash Point °C 250 Min ASTM D-92
Solubility in CS2 % wt 99.0 Min ASTM D-4
Organic matter insoluble in CS2 % wt 0.2 Max ASTM D-4
Viscosity @ 60 °C p 2000±400 ASTM D-2171
Spot test Negative *A.A.S.H.O.T.102
Different bitumen penetration Grades
Characteristics Unit 30/40 50/70 100/120 160/220 200/300 Test Method
Specific gravity @ 25 °C gr/cm3 1.01-1.06 1.01-1.06 1.01-1.04 1.01-1.06 1.01±0.05 ASTM D-70
Penetration @ 25 °C 0.1 mm 30-40 50-70 100-120 160-220 200-300 ASTM D-5
Softening Point (R &B) °C 55-63 46-54 42-49 35-43 34-41 ASTM D-36
Softening Point (R &B) °C 55-63 46-54 42-49 35-43 34-41 ASTM D-36
Ductility @ 25 °C Cm 100 100 100 100 100 ASTM D-113
Loss on heating, Max % wt 0.2 0.2 0.2 0.2 1.3 ASTM D-6
Drop in Penetration after heating, Max % 20 20 20 20 - ASTM D-6 & D-5
Flash Point. Min °C 250 230 250 220 177 ASTM D-92
Solubility in CS2 % wt 99.5 99 99.5 99 99 ASTM D-4
Spot test - Negative Negative Negative Negative Negative *A.A.S.H.O.T.102
Oxidized Bitumen
Characteristics Unit 85/25 95/25 90/15 9115/15 Test Method
Penetration @ 25°C, 100 gm, 5 Seconds 0.1 mm 20/30 25/30 10/20 10/20 ASTM D-5
Specific gravity @25°C gr/cm³ 1.01/1.05 1.01/1.05 1.01/1.05 1.01/1.05 ASTM D-70
Softening Point (R&B) °C 80/90 90/100 85/95 110/120 ASTM D-36
Loss on heating, Max % wt 0.2 0.2 0.2 Max 0.2 0.2
Flash Point (Cleveland Open Cup), Min °C 260 260 225 260 ASTM D 92
Performance Grades Bitumen (PG)
High Temperature Performance Low Temperature Performance
PG 46 -46, -40, -34
PG 52 -46, -40, -34, -28, -22, -16, -10
PG 58 -40, -34, -28, -22, -16, -10
PG 64 -40, -34, -28, -22, -16, -10
PG 70 -40, -34, -28, -22, -16, -10
PG 76 -34, -28, -22, -16, -10
PG 82 -34, -28, -22, -16, -10
Viscosity Grades Bitumen (VG)
Characteristics Unit VG 40 VG 30 VG 20 VG 10 Test Method
Absolute Viscosity @ 60°C, Poises °C Min. 2200 Min. 2400 Min. 1600 Min. 800 IS 1206 (Part 2)
Kinematic Viscosity @ 135°C cSt Min. 400 Min. 350 Min. 300 Min. 250 IS 1206 (Part 3)
Softening Point (R&B) °C Min. 50 Min. 47 Min. 45 Min. 40 IS 1205
Flash Point (Cleveland Open Cup) °C Min. 220 Min. 220 Min. 220 Min. 220 IS 1209
Solubility in trichloroethylene % Min. 99 Min. 99 Min. 99 Min. 99 IS 1206
Penetration @ 25°C (100 grams, 5 seconds) 0.1 mm 40-60 50-70 60-80 80-100 IS 1203
Test on residue from thin film oven tests/RTFOT
(i) Viscosity ratio @ 60°C °C Max. 4.0 Max. 4.0 Max. 4.0 Max. 4.0 IS 1206 (Part 2)
(ii) Ductility @ 25°C (Thin film oven test) Cm Min. 25 Min. 40 Min. 50 Min. 75 IS 1208
Specification Gravity @ 27/27 °C Min. 0.99 Min. 0.99 Min. 0.99 Min. 0.99 IS 1202
Conforms to BIS (IS 73:2006) Specifications
Dhaduk Petrochemicals Cutback Bitumen Grades Slow Curing (SC)
Characteristics Unit SC70 SC250 SC800 SC3000 Test Method
Min Max Min Max Min Max Min Max
Kinematic Viscosity @ 60°C CST 70 140 250 500 800 1600 3000 6000 ASTM D-2170
Flash Point °C 66 - 79 - 93 - 107 - ASTM D-92
Penetration @ 25°C, 100 gm, 5 Second CM 40 - 60 - 70 - 80 - ASTM D-5
Distillate, volume percent of total distillate to 360°C °C 10 30 4 20 2 12 - 5 ASTM D-402
Ductility @ 25°C, Min CM 100 - 100 - 100 - 100 - ASTM D-113
Solubility in Trichloroethylene, Min % 99 - 99 - 99 - 99 - ASTM D-2042
Water, Max %VOL - 0.5 - 0.5 - 0.5 - 0.5 ASTM D-95
Cutback Bitumen Grades Medium Curing (MC)
Characteristics Unit Test Method
MC30 MC70 MC250 MC800 MC3000
Min Max Min Max Min Max Min Max Min Max
Kinematic Viscosity @ 60°C CST 30 60 70 140 250 500 800 1600 3000 6000 ASTM D-2170
Flash Point, Min °C 38 - 38 - 66 - 66 - 66 - ASTM D-92
Penetration @ 25°C, 100 gm, 5 Second CM 120 250 120 250 120 250 120 250 120 250 ASTM D-5
Distillate Test: Distillate, volume percent of total distillate to 360 °C ASTM D-402
To 225 °C °C - 35 - 25 - 20 - - - -
To 260 °C °C 30 75 10 70 5 55 - 40 - 15
To 316 °C °C 75 95 65 93 60 90 45 85 15 75
Residue from distillation to 360 °C, Min %VOL 50 - 55 - 67 - 75 - 80 - STM D-402
Ductility @ 25°C, Min CM 100 - 100 - 100 - 100 - 100 - ASTM D-113
Solubility in Trichloroethylene, Min % 99.0 - 99.0 - 99.0 - 99.0 - 99.0 - ASTM D-4
Water, Max %VOL - 0.2 - 0.2 - 0.2 - 0.2 - 0.2 ASTM D-95
Cut back Bitumen Grades Rapid Curing (RC)
Characteristics Unit Specification Test Method
RC 30 RC 70 RC 250 RC 800 RC 3000
Min Max Min Max Min Max Min Max Min Max
Kinematic Viscosity @ 60°C CST 30 60 70 140 250 300 800 1600 3000 6000 ASTM D-2170
Flash Point °C - - - - 27 - 27 - 27 - ASTM D-92
Penetration @ 25°C, 100 gm, 5 Second CM 80 120 80 120 80 120 80 120 80 120 ASTM D-5
Residue from distillation to 360 °C, Min ASTM D-402
To 225 °C °C 55 - 50 - 35 - 15 - - -
To 260 °C °C 75 - 70 - 60 - 45 - 25 -
To 316 °C °C 90 - 85 - 80 - 75 - 70 -
Residue from distillation to 360 °C, Min %VOL 50 - 55 - 65 - 75 - 80 - ASTM D-402
Ductility @ 25°C, Min CM 100 - 100 - 100 - 100 - 100 - ASTM D-113
Solubility in Trichloroethylene, Min % 99 - 99 - 99 - 99 - 99 - ASTM D-2042
Water, Max %VOL - 0.2 - 0.2 - 0.2 - 0.2 - 0.2 ASTM D-95
Cut back Bitumen Grades Rapid Curing (RC)
Dhaduk Petrochemicals Bitumen Emulsion Specification of Cationic Bitumen Emulsions
Quick Setting Rapid Setting Medium Setting Slow Setting
CQS 1h CRS 1 CRS 2 CMS 2 CMS 2h CSS 1 CSS 1h
Min Max Min Max Min Max Min Max Min Max Min Max Min Max
Viscosity, Say bolt Furol @ 25°C SFs 20 100 - - - - - - - - 20 100 20 100
Viscosity, Say bolt Furol @ 25°C SFs - - 20 100 100 400 50 450 50 450 - - - -
Storage Stability test, 24-h, % A - 1 - 1 - 1 - 1 - 1 - 1 - 1
Demulsibility, 35 mL, 0.8 % Dioctyl sodium - - 40 - 40 - - - - - - - - -
Particle charge test Positive Positive Positive Positive
Sieve test, % A - 0.1 - 0.1 - 0.1 - 0.1 - 0.1 - 0.1 - 0.1
Cement Mixing test, % - N/A - - - - - - - - 2 - - 2
Coating ability and water resistance:
Coating, dry aggregate - - - - - - good - good - - - - -
Coating, after spraying - - - - - - fair - fair - - - - -
Coating, wet aggregate - - - - - - fair - fair - - - - -
Coating, after spraying - - - - - - fair - fair - - - - -
Oil Distillate, by volume of emulsion, % - - - 3 - 3 - 12 - 12 - - - -
Residue % 57 - 60 - 65 - 65 - 65 - 57 - 57 -
Tests on residue from distillation test:
Penetration @ 25°C, 100 grams, 5 Second 40 30 100 250 100 250 100 250 40 90 100 250 40 90
Ductility, 25°C 5 Cm/Min, Cm 40 - 40 - 40 - 40 - 40 - 40 - 40 -
Solubility in trichloroethylene, % 97.5 - 97.5 - 97.5 - 97.5 - 97.5 - 97.5 - 97.5 -
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