Synthesis of Methyl Ester from Waste Cooking Oil Toward Application in Transformer’s Insulating Liquid

This study evaluated the feasibility of using methyl ester prepared from waste cooking oil for electrical insulation in distribution transformers. Methyl is produced by a transesterification reaction between and methanol sodium hydroxide as catalyst. The physicochemical parameters breakdown voltage were determined. effects ageing on voltage, viscosity acid value also investigated. In addition, Kraft paper impregnated with was Experimental results showed that had low (5.17 cSt) high (40.3 kV). Other meet ASTM D6871 except pour flash points. Ageing insignificantly affected ester. After ageing, increased to 42.1 kV. However, 23.5% 79.2 times. Finally, about 5-10% lower than mineral oil.