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Details for Direct Red 31

Direct Red 31 5001-72-9

Category :	Dyestuffs and Pigments
CAS NO :	5001-72-9
EC NO :	225-669-8
MF :	C₃₂H₂₁N₅Na₂O₈S₂
MW :	713.6474
Synonyms :	C.I.Direct Red 31;Disodium 7,7'-iminobis(4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate);Direct Pink 5B;2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2);2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(2-;EINECS 225-669-8;2-Naphthalenesulfonic acid, 7,7'-iminobis(4-hydroxy-3-(phenylazo)-, disodium salt;disodium (3E,3'E)-7,7'-iminobis[4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2-sulfonate];
Molecular Structure :

Direct Red 31

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