Natural asphalt

1) Ash content below 3%
2) Ash content below 5%
3) Ash content below 10%
4) Ash content below15%
Physical properties of
natural asphalt
ASH CONTENT (WT%)
9-10
MOISTURE CONTENT (WT%)
0.5–1.0
VOLATILE MATTER (WT%)
60–65
FIXED CARBON
25- 35
SOLUBILITY IN CS2 (WT%)
85–90
SOLUBILITY IN TCE (WT%)
60–70
NORMAL HEPTAN INSOL (WT%)
60–70
SPECIFIC-GRAVITY @25 DEG CEL
1.1–1.2
COLOUR
BLACK
SOFTENING POINT DEG CEL
190–230
PENETRATION @ 25 DEG CEL 0.1mm
0–2

chemical properties of

natural asphalt
CARBON
75 – 80
HYDROGEN
6 – 9
NITROGEN
0.8 – 1.5
SULPHUR
3 – 6
OXYGEN
1.5 – 2