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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℃,
%

 



150

Moisture

(18~25℃)no visible water

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