Propylene glycol (USP) stands out for its applicability in various fields. Used as a co-solvent in water-based paints, it is suitable for architecture and serves as an intermediate in the production of alkyd resins for paints and varnishes. Its solvency allows its inclusion in liquid cleaning agents, stabilizing enzymatic detergents for laundry, and acting as an antifreeze agent in industrial cooling systems and surgical instruments.

It is also worth highlighting that USP Grade is used, especially in the pharmaceutical industry, within the personal hygiene sector, as well as in various cosmetics, foods, animal feed, and cleaning products.

Propylene glycol (USP): obtaining

Propylene glycol is a substance produced by hydrating propylene oxide. Some manufacturers use non-catalytic processes at high temperatures, between 200 °C and 220 °C, while others use catalytic processes that are carried out between 150 °C and 180 °C, using ion-exchange resins or small amounts of sulfuric acid or alkalis.

Propylene glycol (USP): application and functionality of the substance

Propylene glycol (USP) finds wide application in various products, including toothpaste, mouthwash, hair cosmetics, tonics and creams, body creams, medical and intimate lubricants, shampoos, and gels. It stands out for its functions as a solvent, humectant, skin conditioner, and viscosity regulator in cosmetic ingredients.