94891-34-6 Benzoic acid, 2-hydroxy-, coupled with 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 2,2'-(1,2-ethenediyl)bis(5-aminobenzenesulfonic acid) and diazotized 4-nitrobenzenamine, disodium salt EINECS 305-634-4