Composition Characterization of Fatty Acid Zinc Salts by Chromatographic and NMR Spectroscopic Analyses on Their Fatty Acid Methyl Esters

Figure 6

GC-mass chromatograms of methyl-esterified products prepared (a) directly from fatty acids zinc salts (industrial chemical A and B) by the conc. HCl/methanol/toluene and (b) by NaOH saponification/methanolic BF₃ method on hydrolysed samples. The internal standard (triundecanoin) was methyl-esterified together.

(a)

(b)