91672-70-7 Chromium, 2-hydroxy-3,5-dinitrobenzenediazonium-4(or 5)-hydroxy-1-naphthalenesulfonic acid coupling products 3-hydroxy-4-((1-hydroxy-2-naphthalenyl)azo)-1-naphthalenesulfonate complexes, compds. with N-butyl-1-butanamine and N-cyclohexylcyclohexanamine EINECS 294-079-0