Propylene Glycol Industrial Grade (PGI) is produced by the high temperature and pressure hydrolysis of Propylene Oxide (PO) with excess water. PGI is a distilled material of greater than 99.50% purity. PGI is colorless, odorless, water soluble, nontoxic liquid with low vapor pressure, medium viscosity. It is used in numerous industries, having a wide range of practical applications, such as Polyester resins, paints, coatings, antifreeze coolants

Propylene Glycol USP Grade (PG USP) for Pharmaceutical is a material produced by hydrolysis of Propylene Oxide (PO) with purified water at the high temperature and pressure. PG USP is a high purity product of more than 99.80% purity. PG USP is a clear, relatively nontoxic, hygroscopic liquid with low vapor pressure. According to these properties, PG USP is cleared for use in the United States in accordance with U,S. FDA requirements. PG USP is used as an excipient (non-active ingredient) in the manufacture of pharmaceutical product. PG USP is produced in compliance with the United States Pharmacopeia(USP), also meets the requirements of European Pharmacopeia (EP) and other regulations and standards.