Nigrosine, C22H14N6Na2O9S2, CAS Number-8005-03-6, C.I. 50420, Acid Black 2, 100g, Black to Black-Red, Pure, HKBVRFLHNUEVRO-HMDKGIQMSA-L, Authentic, disodium;4-amino-3-[(4-nitrophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-
Nigrosin, C22H14N6Na2O9S2, CAS Number-8005-03-6, C.I. 50420, Acid Black 2, 100g, HKBVRFLHNUEVRO-HMDKGIQMSA-L, disodium;4-amino-3-[(4-nitrophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate, MFCD00044681, 616.49, wat