Propylene Glycol is used in the production of a wide range of products including such diverse commodities as polyester resins, engine coolants, latex paints, heat transfer fluids and deicing compounds. It also meets requirements in liquid cleaners, lubricants, plasticizers sand cement grinding additives. It is employed as a solvent, heat transfer medium, or as a chemical intermediate, taking advantage of its reactive hydroxyl groups.

Propylene Glycol is a preferred glycol for manufacturing high performance unsaturated polyester resins, themselves used in a variety of applications such as reinforced plastic laminates for marine construction, gel coats, sheet molding compounds and synthetic marble castings.

Aqueous solutions of Propylene glycol display excellent antifreeze properties, and are, therefore, valuable as low temperature heat transfer and aircraft deicing fluids.

PG is an important co-solvent for architectural water-based paints, and is also used as an intermediate in the production of alkyd resins for paints and varnishes. Its solvency lends its use for liquid cleaners, including the stabilization of enzymatic liquid laundry detergents.