This product offers one of the highest purity propylene glycols available in the marketplace – with a specified purity of 99.8 percent or greater, non-detectable MEG/DEG2 contents, adherence to IPEC-PQG3 Good Manufacturing Practices for pharmaceutical excipients, and a two-year shelf life when stored according to Dow’s recommendations. The purity and versatility of DOW PuraGuard PG USP/EP allow it to be used as an ingredient in products subject to very stringent quality standards, including pharmaceuticals, foods, beverages, cosmetics, personal care products and animal feed.