... HS CODE:2930909090 arene extraction, refine paraffin, refine diesel oil, electronic component DIMETHYL SULFOXIDE DMSO M.F.:(CH3)2SO( DMSO)M.W ... , dyestuff, pharmaceutical intermediate: arene extraction, refine paraffin, refine diesel oil, electronic component washing, gas absorption, rare metal leach, medium antifreeze agent, material ...