COAL TAR ( LIQUID , PENCILS , LUMPS )
USED IN ALUMINUM PLANTS*
* ENTERS IN MANY MIXTURES WHICH ARE USED AS A BUFFER AGAINST RUST TO SAVE WATER PIPES AND METAL SURFACES
USED IN SOME PAINTS *
GENERAL SPECIFICATIONS :
COAL TAR
PITCH ( PENCILS )
|
Specification
|
Values
|
Water Content
|
0.5 % max
|
Density Gm / cm at 25m
|
1.3 max
|
Softing Point(mettler)
|
90 C
|
Toluene insoluble
|
34 % min
|
Quinolne insoluble
|
19 % max
|
B-resin
|
16 : 22 % min
|
Ash Content
|
1 % max
|
Volatile matter
|
54 % max
|
Coker value
|
52 % min
|
|
|