N,N'-Diphenylbenzidine MHW-WFK-NW202309002 Catalogue No. Reactivity N,N'-Diphenylbenzidine Range 531-91-9 Sensitivity White crystalline powder Specifications FAQs Product ParameteCatalogue NOMHW-WFK-PH202309002CAS No.531-91-9Product NameN,N'-DiphenylbenzidineMolecular formulaC24H20N2Molecular weight336.4290Package5KGS /DRUM, 10KGS /DRUM, 25KGS /DRUMAppearanceWhite crystalline powderAssay95.0%~101.0%Quality standardsJP, EP, USP, Enterprise Standard (Nutrition and health care specifications)Shelf life2 yearsStorageKeep container tightly closed and in a cool place. Keep away from heat.