Propylene glycol is a colorless, odorless, slightly sweet synthetic liquid widely used as a solvent, humectant, and stabilizer in pharmaceuticals, foods, cosmetics, and industrial products, valued for its effectiveness and relatively low toxicity; it was first synthesized in the late 19th century, with large-scale production beginning in the 1930s as a safer alternative to ethylene glycol, gaining importance during World War II and eventually becoming an essential and widely accepted compound across medical, food, and industrial applications.
BRAND NAMES
Propylene glycol is marketed under several brand and trade names, including Dow Propylene Glycol, USP Propylene Glycol, PG Pharma Grade, NeoPG, and Purelene (pharmaceutical and cosmetic grade), with brand usage varying by industry and manufacturer.
