Premium
A comparative study of the X‐ray diffraction patterns and thermal transitions of metal soaps
Author(s) -
Vold Marjorie J.,
Vold Robert D.
Publication year - 1949
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/bf02822061
Subject(s) - barium , chemistry , calcium , lithium (medication) , metal , crystallography , inorganic chemistry , organic chemistry , medicine , endocrinology
Summary X‐ray diffraction patterns at room temperature for soaps of barium, calcium, and lithium were found to be characteristic for different soaps of the same cation. This is true not only for palmitates and stearates but also (with minor variations) for mixed soaps containing up to at least 50% oleate, for pure calcium oleate, and even for lithium 12‐hydroxystearate. Soaps of the same cation in mixtures approximating the composition of natural tallow fatty acids appear to form mixed crystals. The succession of phases formed on heating shows strongly the influence of the oleate in the mixture. Calcium resinates appear to crystallize imperfectly but definitely with a “head to head” arrangment of the abietate radicals in contrast to the acids which give evidence of a head to tail arrangement.