Molecular formula :
nature : black powder. In alkaline insurance Bulk Powder also lighter in color. The concentrated sulfuric acid was yellow and brown. Do not dissolve in water. 4,4 '- diamino-1 ,1' - anthraquinone and imine 2-anthraquinone A chloride condensation, and by cyclization in the system. Used mainly cotton, polyester / cotton blended fabric dyeing. Also for viscose fiber and silk dyeing.
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