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The solubility of heavy metal soaps in co-solvent mixtures of chloroform and propylene glycol

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Journal of the American Oil Chemists’ Society

Summary

The solubilities of the myristates, laurates, palmitates, and stearates of magnesium, lead, calcium, barium, and zinc have been measured at 25° C. in chloroform and in propylene glycol and in their mixtures. Even where they are sparingly soluble in the solvents separately, they dissolve freely in mixtures of the two.

For each metal the solubility is greatest for laurate and least for stearate and it is very low for zinc soaps, particularly zinc stearate.

Heavy metal soaps may be directly titrated with acid in mixtures of propylene glycol and chloroform using thymol blue as indicator (yellow to pink).

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References

  1. Braun, H. J., “Die Metallseifen,” Otto Spamer, Leipzig, 1932.

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Authors and Affiliations

  1. Department of Chemistry, Stanford University, California

    Santi R. Palit (Bristol-Myers Company Post Doctorate Fellow in Chemistry) & James W. McBain

Authors
  1. Santi R. Palit
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  2. James W. McBain
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Palit, S.R., McBain, J.W. The solubility of heavy metal soaps in co-solvent mixtures of chloroform and propylene glycol. J Am Oil Chem Soc 24, 190–193 (1947). https://doi.org/10.1007/BF02593244

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  • DOI: https://doi.org/10.1007/BF02593244

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