Summary
It has been proved that fumaric and maleic acids are very effective in peroxidative oxidation (decolorization) of indigocarmine at 37°C. Maleic acid is more active than fumaric acid. Ferric ions (10−5 g diluted up to 1:6 millions) promote the reaction, but Co2+ ions (10−3 g) slightly inhibit it.
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Literatur
A. Krause et al., Z. anorg. allg. Chem.331, 350 (1964); Exper.20, 426 (1964); Monatsh. Chem.96, 300 (1965); Naturwissenschaften52, 158 (1965).
A. Krause et al., Naturwissenschaften49, 347 (1962).
A. Krause, Z. anorg. allg. Chem.307, 229 (1961).
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Krause, A., Wachowski, L. Über das unterschiedliche katalytische Verhalten von Fumar- und Maleinsäure. Experientia 21, 618 (1965). https://doi.org/10.1007/BF02144036
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DOI: https://doi.org/10.1007/BF02144036