Propylene Glycol

Propylene Glycol

View of label of propylene glycol with ingestion, skin contact and eye contact information. This also shows the the mixing chart.

Propylene Glycol has many uses besides solar heat transfer loops.

* Solvent in the flavor concentrate and fragrance industry, an excipient in elixirs and pharmaceuticals, and a coupling agent in sunscreens, shampoos, shaving creams and other personal care products
* Wetting agent for natural gums to simplify compounding
* Humectant, preservative and stabilizer in diverse applications.
* Raw material to produce high-performance unsaturated polyester resins (UPR) used for marine construction, gel coats, sheet molding compounds and synthetic marble castings
* Chemical intermediate in the production of resins for paints and varnishes
* Solutions with water to make antifreeze, heat-transfer fluids and aircraft and runway deicing fluids
* Solvent in printing inks
* Solvent and enzyme stabilizer in laundry detergents
* Stabilizer in hydraulic fluids
* Plasticizers to improve the process-ability of plastics
Propylene glycol is safer in two ways than ethylene glycol, the alcohol used in car antifreeze. One, it will not kill pets if they drink some that is spilled and two, it decomposes when it seeps into the ground or ground water faster than ethylene glycol.