1.Hydroquinone photo grade 2.Cas no.:123-31-9 3.White ... photograph, dye, pesticide rubber, chemical industry, medicine, polymer retarder, desulphurization in fertilizer, urea synergist antioxidant, analyse chemical reagent and so. ... , dye, pesticide rubber, chemical industry, medicine, polymer retarder, desulphurization in fertilizer, urea synergist antioxidant, analyse chemical reagent and so. ...