|
Appearance
|
Black granules
|
|
Substance soluble in water
|
Max 2.0%
|
|
Cyano compounds (CN)
|
Passes test
|
|
Heavy metal (as Pb)
|
Max 0.01%
|
|
Arsenic (As)
|
Max 0.0005%
|
|
Lead (Pb)
|
Max 0.005%
|
|
Iron (Fe)
|
Max 0.05%
|
|
Zinc (Zn)
|
Max 0.15%
|
|
Polycyclic aromatics
|
Passes test
|
|
Tar products
|
Passes test
|
|
n-Hexane absorption
|
Min 20.0%
|
|
Residue on ignition (at 1000°C)
|
Max 10.0%
|
|
Loss on drying (at 120°C)
|
Max 10.0%
|
|
Iodine adsorption
|
Min 800 mg/gm
|