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1-Naphthylamine-7-Sulfonic Acid

    Specifications

    HS Code

    761612

    Cas Number 130-13-2
    Molecular Formula C10H9NO3S
    Molecular Weight 223.25 g/mol
    Iupac Name 1-Aminonaphthalene-7-sulfonic acid
    Synonyms Schaeffer’s Acid, 7-Amino-1-naphthalenesulfonic acid
    Appearance White to light gray crystalline powder
    Solubility In Water Moderately soluble
    Melting Point 285-290 °C (decomposes)
    Density 1.56 g/cm³
    Pka 1.8 (sulfonic acid group), 3.7 (amine group)
    Odor Odorless
    Storage Conditions Store in a cool, dry, well-ventilated place

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