CAS:2379-75-1
Molecular formula:C20H14Cl2O2S2
Molecular weight:421.36
Properties: red purple powder. Insoluble in water, ethanol and organic solvents. It is dark green in concentrated sulfuric acid and reddish purple after dilution. It is yellow in the alkaline solution of insurance powder and colorless in the acidic solution.
Application: VAT voilet 3, a light brittle dye. It is mainly used for cotton fiber dyeing and cotton printing, with good affinity and levelness. It is used for dyeing silk, with good levelness and affinity. It is also suitable for dyeing wool, nylon and vinylon. It can also dye black with bromine indigo and reduced Brown RRD, and can also dye with reduced brilliant peach R, orange RF, bright red GGN, etc.
Structure: