Purification of petroleum waxes

Abstract

Fang slack wax was deoiled by Methyl ethyl ketone (MEK) and decolorized by decolorizinq agent, i.e. fullers earth, activated carbon, and clay. The best color of waxes after decolorizing process the contact time with decolorizing agent at 70ºC was 1 hour and the decolorizing agent was a mixture of fullers earth (5 grams) and activated carbon (2 grams) per 50 grams of wax. Fang wax was hard paraffin wax and plate crystalline. Both unrefined wax and refined wax were tested for their physical properties, i.e. oil content, melting point, congealing point, color, hardness, content of benzene and carbon distribution of wax.