Slack Wax

xture of paraffin wax and oil originated from petroleum crude oil. ontent can range from 10% to 30%.

oduced during the production of Group I lube base oil. During production of Group I lube base oil, the feedstock firstly has to go through solvent extraction process to remove aromatics and the resultant product is called raffinate. The raffinate is then diluted with solvent like methyl-ethyl ketone (MEK) to lower its viscosity to improve low-temperature filterability. The diluted oil is then chilled to -10°C to -20°C. Wax crystals will form, precipitate and removed by filtration. The removed wax becomes The traditional usage of Paraffin the production of fully refined paraffin wax. And other major usage are for particle board and medium density fiberboard, cable filing compound , matches, candles, rust protective products and moisture vapor barriers.

With the continuous closure of Group I base oil plant which decrease supply, and new major applications for edstock for low sulfur fuel and Group III base oil plant, the price of Paraffin ince increased by a staggering 300% since early 2000s.