Analyses of Drugs and Chemicals by Infrared Absorption Spectroscopy. XII. : Analyses of Water Soluble Azo Food Dyes by Use of High Molecular Weight Amine.

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Other Title
  • 赤外線吸収スペクトルによる医薬品の分析研究(第12報) : 高分子量アミンを用いる水溶性食用アゾ色素の分析

Abstract

Solubilization technique by the use of a high molecular weight amine was applied for qualitative and quantitative infrared spectrophotometric analyses of some water-soluble azo food dyes (Amaranth, Ponceau SX, New Coccine, Orange I, Sunset Yellow). These dyes in aqueous solutions are extracted with a 5% solution of Amberlite LA-2 in carbon disulfide. Each of these dyes was identified easily by their characteristic bands (Table I). The results obtained in the analyses of synthetic mixed samples of Amaranth and Ponceau SX indicated that this method would be useful for quantitative determination (Table II).

Journal

  • YAKUGAKU ZASSHI

    YAKUGAKU ZASSHI 87 (6), 741-743, 1967

    The Pharmaceutical Society of Japan

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