2,5-dimethoxy-4-[(4-nitrophenyl)diazenyl]benzenediazonium;4-AMINO-2,5-DIMETHOXY-4'-NITROAZOBENZENE DIAZOTATED ZINC DOUBLE SALT;2,5-DIMETHOXY-4[(4-NITROPHENYL)AZO]BENZENE-DIAZONIUM CHLORIDE HEMI[ZINC CHLORIDE] SALT;2,5-DIMETHOXY-4-(4-NITROPHENYLAZO)BENZENEDIAZONIUM CHLORIDE ZINC DOUBLE SALT;4-Amino-2,5-dimethoxy-4'-nitroazobenzene;Fast Black K Salt hemi(zinc chloride);fast black K salt (C.I. 37190);2,5-dimethoxy-4-[(4-nitrophenyl)azo]benzenediazonium tetrachlorozincate (2:1)
