57693-14-8;61847-77-6 trisodium bis[3-hydroxy-4-[(2-hydroxy-1-naphthyl)azo]-7-nitronaphthalene-1-sul

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CAS No. 57693-14-8;61847-77-6
Product Name trisodium bis[3-hydroxy-4-[(2-hydroxy-1-naphthyl)azo]-7-nitronaphthalene-1-sulphonato(3-)]chromate(3-)
Synonyms C.I. 15711:1; C.I. Acid Black 172; Acid Black 172; chromium(3+) sodium 7-nitro-3-oxido-4-[(2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate (1:3:2); trisodium bis[3-(hydroxy-kappaO)-4-{(Z)-[2-(hydroxy-kappaO)-5,8-dihydronaphthalen-1-yl]diazenyl}-8-nitro-5,8-dihydronaphthalene-1-sulfonato(2-)]chromate(3-)
Molecular Formula C40H30CrN6Na3O14S2
Molecular Weight 1003.7934

Physical property