It is extracted from coal tar.
Medium coal tar pitch
Index name | No.1 | No.2 |
Softening point | 80-90 | 75-95 |
Insolubles in toluene% | 15-25 | ≤25 |
Quinoline Insolubles matter % | ≤10 |
|
Ash% | ≤0.3 | ≤0.5 |
Moisture% | ≤5.0 | ≤5.0 |
Volatile | 58-68 | 55-75 |
Beta resin |
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Coking value |
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Modified Coal Tar Pitch
Index name | modified coal tar pitch |
Softening point | 100-110 |
Insolubles in toluene% | 28-34 |
Quinoline Insolubles matter % | 8-14 |
Ash% | ≤0.3 |
Moisture% | ≤5 |
Volatile |
|
Beta resin | ≥18 |
Coking value | ≥56 |
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