CHESTERTON 277, 353 ml aerosol Chesterton Metal Degreaser 277 is a fast-acting, very strong cleaner that does not attack the ozone layer. It is a high performance, non-chlorinated product designed to penetrate oil, grease and other contaminants typically found in industrial production areas. UN 1950 Cl.2.1, 23 points/aerosol Aerosol, flammable