p-Nitrobenzeneazochromotropic Acid Disodium Salt

548-80-1

Chromotrope 2B Disodium Salt; Chromotrope Red 4B Disodium Salt; 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(p-nitrophenylazo)-, Disodium Salt; 4,5-Dihydroxy-3-((4-nitrophenyl)diazenyl)naphthalene-2,7-disulfonic Acid, Disodium Salt;