Sintesis Isoamil Miristat dari Asam Miristat pada Variasi Konsentrasi Katalis Asam Sulfat dan Rasio Mol Asam Miristat dan Isoamil Alkohol Menggunakan Alat Pendispersi Homogen

Abstract

Synthesis of isoamyl myristate from the reaction of esterification reaction between myristic acid and isoamyl alcohol catalyzed by sulfuric acid. catalyst using a homogeneous dispersing device at room temperature has been carried out at different variations, namely catalyst concentration and molar ratio. The variation of catalyst concentration concentration variations are 0M, 0.025M, 0.05M, 0.1M, 0.15M, 0.2M and the molar ratio variation parameters are molar ratio variation parameters are 1:1, 1:2, 1:3, 1:4, and 1:5 myristic acid conversion to isoamyl myristate. Determined by alkalimetric titration based on changes in acid numbers before and after the reaction based on SNI 7:1.and after reacting based on SNI 7709:2012 and confirmation of changes in functional groups was determined with an alkalimetric titration functional groups were determined by FT-IR spectrophotometer and the formation of isoamyl myristate by GC-MS. Based on the two variations that have been carried out, the optimum reaction conditions atmolar ratio of 1:3 and catalyst concentration of 0.025M with a conversion of 99.29 ± 0.00 ± 0.00%. of 99.29 ± 0.34% and percent yield of 96.79 ± 0.79% and yield of 96.79 ± 1.40% supported by the results of the analysis of changes in functional groups with a spectrophotometer. functional changes with FT-IR spectrophotometer there is an absorption of -C=O stretching ester at wave number 1733.3 cm-1 and no longer detected -OH stretching vibrational groupcarboxylic acid at wave numbers 3300-2400 cm-1 and supported by the supported by the -C-O-C stretching absorption band at wave number 1160.5 cm-1 is also supported by the presence of ion peak at m/z 298 and base peak at m/z 70 so it can be concluded that the isoamyl substitution process has occurred isoamyl substitution process occurs to the H atom of the carboxylic acid group myristic acid.