74665-04-6 Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-nitro-, reaction products with 4-((4-aminophenyl)azo)benzenesulfonic acid monosodium salt, compds. with N,N'-bis(phenyl, tolyl and xylyl)guanidines Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-nitro-, reaction products with 4-((4-aminophenyl)azo)benzenesulfonic acid monosodium salt, compds. with guanidine N,N'-mixed Ph and tolyl and xylyl derivs. EINECS 277-959-9