... ;Trihydroxypropane;pharmacutical glycerin CAS NO.:56-81-5 Formula: C3H8O3 Glycerine USP grade Classification: AlcoholCAS No.: 56-81-5Other Names: 1 ... Glycerol with high quality, competitive price and excellent serviceProductname:glycerol;Glycerine,1,2,3-Propanetriol;Trihydroxypropane;pharmacutical glycerinCAS NO.:56-81 ... %Heavy Metal< 5 ug/gFatty acid ester< 1mg NaOH/50g Glycerine USP grade