Propylene Glycol, with molecular formula C3H8O2 and structural formula, is colorless tran***rent liquid. Its melting point is -59. 5 degree and boiling point is 187. 3 degree, and can be mixed or solvent with water, alcohol and several organic agent. Propylene glycol is a raw material for producing unsaturated of plasticizer, dehydrant, surface active agent, firming agent and binder. Moreover, PG can be used as antiseptics, ice inhibitor and moisture preserver of tobacco.
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