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BlacksaltK Azoic DC 38 Fast Black K FastblacksaltK DaitoBlackSaltK MitsuiBlackKSalt Fast Black Base K Diazo Fast Black K Solid Black K salt ShowaFastBlackKSalt FASTBLACKKSALT,PRACTICAL C.I.Azoicdiazocomponent38 C.1.AzoicDiazoComponent38(37190) FAST BLACK K SALT PRACTICAL GRADE C.I.Azoic Diazo Component 38:C.I.37190 2,5-dimethoxy-4-[(4-nitrophenyl)azo]-benzenediazoniu 2,5-dimethoxy-4-[(4-nitrophenyl)azo]benzenediazonium BENZENEDIAZONIUM, 2,5-DIMETHOXY-4-[(4-NITROPHENYL)AZO]- Benzenediazonium,2,5-dimethoxy-4-[2-(4-nitrophenyl)diazenyl]-