Red colored Inhibited Propylene Glycol is used as an industrial coolant, antifreeze heat transfer agent. The inhibitor package is designed to protect brass, copper, solder, steel, cast iron, aluminum and other metals commonly found in the industrial cooling and heating systems. The effectiveness of Inhibited Propylene Glycol in preventing corrosion has been proven in extensive laboratory and in actual service tests. Using Inhibited Propylene Glycol for heat transfer applications instead of brine solutions or uninhibited propylene glycol reduces maintenance costs and improves heat transfer efficiency.