CAS :1326-82-5
 Colour Index No.: C.I. Sulphur Black 1 (53185)
Standard of identity:HG/T3427-2001
Appearance of the bright black film, granular material
Strength (as standard), sub-100%
Shade (and standard) approximation to the Standard

Moisture content,% <= 6.0
Sodium sulfide in insoluble% <= 0.5
Packing: In 25 kgs net woven bag / carton / iron drum.