... , stabilizer, synthetic rubber, polymerization initiator and heavy metal quantitative analytical reagent.Specification : No.Inspection ItemCriterion1EDTA≥99 ... %3Sulphate(SO4)%≤0.1%4Ferrum % (Fe)≤10PPM5Heavy Metal % (Pb)≤10PPM6PH2.8-3.07AppearanceWhite powderShanghai Polymet ... Sell):PVC Resin,High Purity Antimony,Bismuth ingot,Indium ingot,bismuth needle,pet resin,caustic soda,potassium hydroxide ...