... :Acid Yellow 23 Synonyms:HYDRAZINE YELLOW CAS:1934-21-0 EINECS:217-699-5 M.F:C16H9N4Na3O9S2 M.W:534.36 Orange ... ;NEW COCCINE;PONCEAU 4R;PONCEAU 4RC;trisodium 1-(1-naphthylazo)-2-hydroxynaphthalene-4',6,8-trisulphonate;1-(4-Sulfo-1-naphthylazo ... ;1-(4-sulpho-1-naphthylazo)-2-naphthol-6,8-disulphonicacid,trisodiumsalt CAS:1934-21-0 INECS:217-699-5M.F: C16H9N4Na3O9S2 M ...