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chemical product) |
Coal tar Qualification:
Iitem |
Qualification |
No.1 |
No.2 |
density(ρ 20),g/cm3 |
1.15~1.21 |
1.13~1.22 |
Toluene insolubles,% |
3.5~7.0 |
Not more than 9 |
ash, % Not more than |
0.13 |
0.13 |
moisture,% Not more than |
4.0 |
4.0 |
viscosity(Ε80)Not more than |
4.0 |
4.2 |
ben(Anhydrous base),% Not more than |
7.0 |
7.0 |
Note:Ben is not included as consideration。
Light ben qualification:
Iitem |
Iight ben |
Appearance |
Yellow transparent liquid |
Density(20℃),g/ml |
0.870~0.880 |
(boiling range): (before 75)75℃,% (before 180)180℃,%
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— — 150 |
Moisture |
(18~25℃)no visible water | |
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