固黑K盐;2,5-二甲氧基-4-(4-硝基苯基偶氮)氯化重氮苯锌盐;2,5-Dimethoxy-4-([4-nitrophenyl]azo)benzenediazonium chloride hemi(zinc chloride) salt;Brentamine fast black K salt;Fast Black K Salt hemi(zinc chloride) salt;2,5-Dimethoxy-4-(4-nitrophenylazo)benzenediazonium Chloride Zinc Chloride