1,4-Dihydroxyanthraquinone (crude product) is widely used in Anthraquinone Vat Dye & other Anthraquinone Dye, it is Disperse Brown GL dye, and can be used to produce Disperse Blue R, Disperse Blue SW, Acid Anthraquinone Violet R, Acid Anthraquinone Pure Blue SG, Acid anthraquinone Green G and 1,4-Diaminoanthraquinone intermediate.