Analysis of Chemical-Physical Properties and Breakdown Voltage of Rubber Seed Oil

This research is aimed to describe a new vegetable oil namely crude rubber seed oil as a substitute for mineral oil in oil insulating material. The vegetable oil is widely available in Indonesia but it is still untapped. Rubber seed oil is obtained from the rubber seed pressing process and the seed oil filtration process. In this research, the chemical-physics and electric properties of the crude rubber seed oil (CSO) are tested. As a comparator, mineral used is used and tested with the similar test. Chemical-physical properties of the crude rubber seed oil (CSO) and mineral oil are tested in the experiment. The results for CSO showed that the viscosity, acidity, water content and free fatty acids (FFA) are 31,05 mm2/s, 16,24 mg-KOH/gr, 6.100 ppm, 8,16% Oleat, respectively. for the CSO. For the mineral oil, test results showed that the viscosity, acidity, water content and free fatty acids (FFA) are 10.16 mm2/s, 8.02 mg-KOH/gr, 1.700 ppm and 7.29 % Naphthenic, respectively. The electric property tested in this research is breakdown voltage. The Breakdown voltage of crude rubber seed oil is 37.7 kV and 32 kV for mineral oil. This study found that the crude rubber seed oil (CSO) has a good prospect to develop into oil insulation.