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Compound Formation in Binary Fatty-Acid Mixtures
M. Fieldes and L. Hartman
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences
Vol. 233, No. 1193 (Dec. 20, 1955), pp. 195-202
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/99877
Page Count: 8
You can always find the topics here!Topics: Melting, Fatty acids, Crystals, Molecules, Solid solutions, Solidification, Atoms, Eutectics, Nonesterified fatty acids, X ray diffraction
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Long crystal spacings d1 and short spacings d2 and d3 of C12-C14, C14-C16 and C16-C18 fatty-acid mixtures have been determined using a high resolution X-ray diffractometer in an attempt to elucidate the question of compound formation in these mixtures. Both d1 and d3 spacings showed significant changes in relation to the composition of the mixtures whereas d2 spacings remained practically unchanged. The changes in d1 and d3 spacings are interpreted as denoting limited intersolubility of the component fatty acids and partial compound formation. Numerical correlation found between the above changes seems to indicate a shortening of the distance between alternate carbon atoms of the higher melting component in mixtures containing 30 to 70 mol. percent of this component.
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences © 1955 Royal Society