Chemical Specification

Gilsonite or natural asphalt is available to deliver in various grades and categorized by softening point. Softening point is working as an approximate guide to melt viscosity in solution.

The chemical specifications are different between Gilsonite grades, with only solubility and asphaltene /resin-oil ratios.

GILSONITE SPECIFICATION

TEST METHOD

RESULT

TEST

NO

ASTM-D3174

2~10

ASH CONTENT,WT%

1

ASTM-D3173

1~3%

MOISTURE CONTENT,WT%

2

ASTM-D3175

63

VOLATILE MATTER,WT%

3

ASTM-D3172

29

FIXED CARBON,WT%

4

ASTM-D4

81

SOLUBILITY IS CS2,WT%

5

ASTM-D3289

1.01~1.06

SPECIFIC GRAVITY @25 C

6

ASTM-D3279

79

NORMAL HEPTHAN INSOLUBLES,WT%

7

——————-

Black

COLOR IS MASS

8

——————-

Brown

COLOR IN STREAK OR POWDER

9

ASTM-D36

180~205

SOFTENING POINT,C

10

ASTM-D5

0

PENETRATION @25C

11

ELEMENT ANALYSIS

ASTM-D5291

74

CARBOB,WT%

1

ASTM-D5291

9.1

HYDROGEN,WT%

2

ASTM-D5291

1.67

NITROGEN,WT%

3

ASTM-D5291

3.1

OXYGEN,WT%

4

LECO(S)ANALYZER

0.5

SULPHURE,WT%

5