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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 |
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Toluene insolubles,% |
3.5~7.0 |
Not more than 9 |
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ash, % Not more than |
0.13 |
0.13 |
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moisture,% Not more than |
4.0 |
4.0 |
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viscosity(Ε80)Not more than |
4.0 |
4.2 |
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ben（Anhydrous base）,% Not more than |
7.0 |
7.0 |
Note:Ben is not included as consideration。
Light ben qualification：
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Iitem |
Iight ben |
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Appearance |
Yellow transparent liquid |
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Density（20℃），g/ml |
0.870~0.880 |
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(boiling range):
(before 75)75℃，%
(before 180)180℃，%
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—
—
150 |
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Moisture |
（18~25℃）no visible water | |
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