... and various organic agents.PG is the raw material for unsaturated polyester resin,plasticizer,surfctant,emulsifying agent ... Propylene GlycolClassification:Industry GradeCAS No.:57-55-6Purity:99.5%minDescription/AppearanceColorless, transparent liquidWater Moisture0.1% ... contact with skin and eyes raw material for UP resin,antifreeze,moisturizer,high purity 99.5% Propylene Glycol industrial grade