Physical and Chemical Properties:
The appearance is a black uniform powder. Insoluble in water, soluble in ethanol, pure benzene and toluene, easily soluble in oleic acid and stearic acid. It has good heat resistance, appears blue-black in ethanol, blue to bluish-black in concentrated sulphuric acid solution, and bluish-black precipitate when diluted. Its aqueous solution forms a brownish-purple precipitate with sodium hydroxide.
Specifications Appearance: Black uniform powder Colour: Similar to standard product, colouring strength is 100±5 of the standard Moisture content, % ≤4 Ash content, % ≤2.5 Fineness (residue on sieve), % <0.7
Uses: Mainly used for colouring plastics, adhesive powders, bakelite powders, shoe polish, inks and printing inks.