... is easy to use and widely used in petroleum, chemical industry, fuel, metallurgy, pharmacy, food, paper making, coal washing ... , stearin, fatty acidMedicine: hydrogen peroxide, vitamin and so onPetrochemical industry: diesel oil, lube oil, ceresin wax, mineral oil and ... chemistry: bromine water, potassium cyanide, fluorite and so onPaint: resin class, varnish, dye, raw lacquer and son onMinerals: coal ...