Summary
The solubility of calcium soaps of rosin acids and fatty acids have been determined and compared.
The solubility of calcium soaps of rosin acids (d-pimaric, dihydroabietic, and l-abietic acids) present in gum rosin was found to be greater than that of the calcium soaps of the following saturated fatty acids: lauric, myristic, palmitic, and stearic acids.
The calcium oleate was much more soluble than the calcium stearate.
As the amount of hydrogen in the rosin acid molecule is increased, l-abietic to dihydroabietic to tetrahydroabietic acid, the solubility of the calcium soap is decreased.
The author wishes to express his indebtedness to Dr. G. S. Jamieson and W. G. Rose of the Agricultural Chemical Research Division for the pure lauric, myristic, palmitic and stearic acid used in this study.
Similar content being viewed by others
Bibliography
Fieser and Campbell, J.A.C.S.60, 2631, 1938.
Fleck and Palkin, J.A.C.S.59, 1593–95, 1937.
Fleck and Palkin, J.A.C.S.60, 921, 1938.
Fleck and Palkin, J.A.C.S.61, 1230, 1939.
Palkin, Chem. Ed.12, 35, 1935.
Palkin and Harris, J.A.C.S.55, 3677, 1933.
Palkin and Harris, J.A.C.S.56, 1935, 1934.
Author information
Authors and Affiliations
About this article
Cite this article
Pohle, W.D. Solubility of calcium soaps of gum rosin, rosin acids and fatty acids. Oil Soap 18, 244–245 (1941). https://doi.org/10.1007/BF02544260
Issue Date:
DOI: https://doi.org/10.1007/BF02544260