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Gilsonite Specification

Specification Gilsonite / Specification Natural Bitumen / Specification Asphalt Bitumen

NATURAL BITUMEN PHA. 11-18 A GRADES :

Softening Point (ASTM E28-92)

165-185°C

329-365°F

Ash (ASTM D271-70M)

<16%

Moisture

<1.5%

Penetration (25°C, 100 gm, 5 sec.)

0-2

Color in Mass

Black

Color in Streak or Powder

Brown - Dark Brown

Fixed carbon

27-33

Flash Point (COC)

316ºC; 600ºF

Solubility in cs2

 ( wt % ) 75-85

Nitrogen

( wt % ) 0.6-1.5

Sulfur

( wt % ) 3-6%

Hydrogen

( wt % ) 6- 9

Oxygen

( wt % ) 1. 5- 2. 5

Specific Gravity

1.02-1.3 25/25 c˚

 

NATURAL BITUMEN PHA. 8-10 A GRADES :

Softening Point (ASTM E28-92)

185-205°C

329-365°F

Ash (ASTM D271-70M)

<10%

Moisture

<1.5%

Penetration (25°C, 100 gm, 5 sec.)

0-2

Color in Mass

Black

Color in Streak or Powder

Brown - Dark Brown

Fixed carbon

30-35

Flash Point (COC)

316ºC; 600ºF

Solubility in cs2

85-90 ( wt % ) 

Nitrogen

3% Typical

Sulfur

3-6%

Hydrogen

( wt % ) 6-9

Oxygen

( wt % ) 1. 5- 2. 5 

Specific Gravity

1-1.2 25/25 c˚

 

NATURAL BITUMEN PHA. 2-7 A GRADES :

Softening Point (ASTM E28-92)

165-220°C

329-365°F

Ash (ASTM D271-70M)

<3%

Moisture

<1.5%

Penetration (25°C, 100 gm, 5 sec.)

0-2

Color in Mass

Black

Color in Streak or Powder

Brown - Dark Brown

Fixed carbon

35-43

Flash Point (COC)

316ºC; 600ºF

Solubility in CS2

( wt % ) 89-92 

Nitrogen

( wt % ) 0.01

Hydrogen

( wt % ) 8.5

Oxygen

( wt % ) 1.9 

Sulfur

( wt % ) 3-6%

Specific Gravity

25/25 c˚ 0.5-0.8