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The mutual solubilization of soap and lime soap dispersing agents
Author(s) -
Weil J. K.,
Schollenberger C. A.,
Linfield W. M.
Publication year - 1977
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02671363
Subject(s) - krafft temperature , solubility , chemistry , lime , sodium , organic chemistry , materials science , aqueous solution , metallurgy , micelle , critical micelle concentration
and summary Krafft point measurements were used to show that lime soap dispersing agents (LSDA) and soaps solu‐bilize each other. Addition of as little as 5% soap to amphoteric LSDA of limited water solubility (high Krafft point) brought about a substantial lowering of the Krafft point and thus markedly improved water solubility. On the other hand, addition of 10% amphoteric LSDA to sodium palmitate lowered the Krafft point of the soap by 10 to 14 C. Addition of anionic LSDA to sodium palmitate showed smaller Krafft point depressions. Addition of a builder‐type salt, such as sodium metasilicate, had essentially no effect on the Krafft points of soap LSDA mixtures.