Chromatography of the isomeric methylene-interrupted methyl cis, cis-octadecadienoates : 2. Gas-liquid chromatography

✍ Scribed by W.W. Christie

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 545 KB
• Volume: 37
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(01)99067-3

✦ Synopsis

The equivalent chain lengths on gas-liquid chromatography of the isomeric methylene-interrupted methyl cis, cis-octadecadienoates

(2,5-to 14,17-) 'were de: tcrmined on eight different liquid phases, two of which were in capillary columns.:

The equivalent chain length values increased with distance of the double bonds from the carboxyl group but the values for the 3,6-and 13,16-isomers on polar columns or the 13,x6-isomer alone on the non-polar column were much greater than those of the adjacent isomers. Isomers differing by 0.04 in equivalent chain length could be separated on the Apiezon L capillary column and those differing by 0.08 in equivalent chain length on the neopentyl glycol succinate capillary column. I&AIL ,AND: LW KEN : JIE~. have 'recently recorded -retention, 'data for the complete series :of isomeric methyl cis and trails octadecenoates. A similar study 'of tlie retention: data and separations ,achieved' of the isomeric .methyleneAinterrupted methyl cis-cis-.' * Part I. see ref. rg. . J. CilS'Ot?tdO~., 37 (Ig(i8) 27-32.

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