Working at a food or beverage facility? It can be challenging to adhere to all the regulations. Houghton Chemical can help. We manufacture an inhibited propylene glycol (SAFE-T-THERM^® GRAS) that is carefully formulated for use where incidental food or potable contact is possible. This product contains United States Pharmacopeia (USP) propylene glycol, FDA approved inhibitors, and dye for leak detection. Other grades of glycol will not suffice. The quality of your glycol is just as important as the quality of your product.