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Direct Red 31

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  Post Date: Nov 30,2013
  Expiry Date: May 29,2014
  Detailed Description: Cas No. :5001-72-9

  CAS Registry Number:

5001-72-9
  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 Formula: C32H21N5Na2O8S2
  Molecular Weight: 713.6474
  Molecular Structure: 5001-72-9 Direct Red 31

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