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(such as naphtha , gasoline , and diesel ) by the process of fractional distillation , usually under vacuum conditions. a better separation can be achieved by further processing of the heavier fractions of the crude oil in a de-asphalting unit, which uses either propane or butane in a supercritical...
in water emulsifier, emmolient, and solubilser (good for mild formulas) - - click here peg monostearates peg esters are non-toxic and non-irritating nonionic emulsifiers.the low molecular range are oil soluble to work in non aqueous systems. the high molecular weight esters are water soluble to work...