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Fast Black Potassium 25 g


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Fast Black Potassium Salt

(2,5-Dimethoxy-4-(4-nitrophenylazo)benzenediazonium chloride zinc double salt; 4-Amino-2,5-dimethoxy-4′-nitroazobenzene diazotated zinc double salt; Azoic Diazo No. 38)

  CAS Number:
  Chemical Formula:   C14H12 N5 O4 0.5Cl4 Zn
  Molecular Weight:   417.87 g/mol


Fast Black potassium salt is a water soluble dye used for the histochemical demonstration of acid phosphatases with naphthol AS phosphates. It has also been found useful for staining of proteinaceous tissue components.

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