Sulphur black b 200% Cas:1326-82-5 Colour index no.: c.I.Sulphur black 1(53185) Standard of identity: hg/t3427-2001 Appearance flashing black flakes or granules Strength (with the standard ) 100% Shade approximate to the standard Moisture, % 6.0 Insoluble matter in sodium sulfide, % 0.5 Packing: in 25 kgs net woven bag / carton / iron drum. Standard of identity: hg/t3427-2001