... , used in UPR,plasticizer,surfactant,antifreeze,emulsifier,softener Propylene glycol (PG C3H8O2 ) is a colorless liquid with ... moisture preserving agent for tobacco. Propylene GlycolClassification:Industry GradeCAS No.:57-55-6Purity:99.5%minDescription/AppearanceColorless, transparent liquidWater ... material for UP resin,antifreeze,moisturizer,high purity 99.5% Propylene Glycol industrial grade