Removal of Ferrous using Citric Acid in Patchouli Oil Purification by Complexometry

This study is aimed to examine citric acids as a potential chelating agent decrease colloidal impurities in patchouli oil improve its quality. It covers colour, specific density, refractive index, acid value, iron content, oleoresin and alcohol. Complete Randomized Design with factorial design used two factors repeated 3 times. Factors are (1) concentration consists of 0.25%, 0.5%, 1.0% 1.50% (w/v), (2) stirring time 30, 60 90 minutes. Further, purified by was compared Ethylene Diamine Tetra Acetate (EDTA). Findings show that the agents have an effect on quality oil. The higher more time, better terms content. also has almost same performance EDTA. main components (patchouli alcohol oil) not affected treatment. Purified using meets Indonesian National Standard (SNI) requirements so one agents.