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Paraffin wax is a soft colourless solid, derived from petroleum, coal or shale oil, that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms. It is solid at room temperature and begins to melt above approximately 37 ??C (99 ??F);[2] its boiling point is >370 ??C (698 ??F).[3] Common applications for paraffin wax include lubrication, electrical insulation, and candles; [4] dyed paraffin wax can be made into crayons. It is distinct from kerosene and other petroleum products that are sometimes called paraffin.[5]