Analisis Acid Value (AV) pada Sampel Palm Stearin Oil Fatty Acid dengan Metode Titrasi Alkalimetri di Laboratorium PT. Soci Mas Medan

Abstract

Acid value is a crucial factor in determining the quality of free fatty acids in oleochemical products. A high acid value indicates a high content of free fatty acids, which can reduce product quality. The objective of this study is to analyze the acid value (AV) of Palm Stearin Oil Fatty Acid using the alkalimetric titration method at the laboratory of PT. Soci Mas Medan. The method used involves titrating the sample, which has been dissolved in neutral ethanol, with 0.1 N NaOH solution and the addition of phenolphthalein indicator. The results showed that the acid values from four consecutive tests were 214.14 mgKOH/g, 205.63 mgKOH/g, 202.75 mgKOH/g, and 204.04 mgKOH/g, respectively. All analysis results fall within the quality standard range set by PT. SOCI MAS Medan, which is 196–216 mgKOH/g. The quality of Palm Stearin Oil Fatty Acid is still suitable for use in production processes. This research is expected to contribute to the quality control of oleochemical raw materials.