Product Name: Propylene Glycol Appearance:Colorless Liquid Purity:>99% CAS:57-55-6 EINECS:200-338-0 Solubility: It can be mixed with water and other organic solvents. Propylene Glycol is a viscous colourless liquid which is nearly odourless but possesses a faintly sweet taste.Forty-five percent of propylene glycol produced is used as chemical feedstock for the production of unsaturated polyester resins. Propylene glycol is used as a humectant, solvent, and preserva-tive in food and for products.