PATCHOULI ALCOHOL ACTIVITY AS CARBON STEEL CORROSION INHIBITOR

• Main Author: Efraim Barus (NIM 105 02 063), Roma
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/6705
• Institution: Institut Teknologi Bandung

ABSTRACT: <br /> <br /> Its was learnt Patchouli Oil could be used as a vapour phase corrosion inhibitor to the carbon steel. This inhibition power it was suspected came from the patchouli alcohol component. In this execution patchouli alcohol was isolated from patchouli oil with the KLT preparative method. Patchouli alcohol results of the isolation it was identified by means of KLT, infrared spectrometry showed the peaks of the absorption wave number of 3467 cm -1 (the characteristics of the stretching vibrations of -OH group), 2927 cm -1 (stretching vibrations of -CH2 and -CH3 groups), 1097 cm -1 (stretching vibrations of C-OH). The results of gas chromatography showed retention times at 17, for the patchouli alcohol component faction produced (before and after the isolation process). Patchouli alcohol results of the isolation in 20 ppm concentration had efficiency of the corrosion inhibition against the carbon steel at 56,68 %.