The Hazard Characteristic Code (HCC) designation for Flammable Liquid, Packing Group III, OSHA IC. Hazard Group & Comments: A product meeting the definition of a flammable liquid (UN Class 3) under 49?CFR?173.120 and classed as a Packing Group III under 49 CFR 173.121 with an initial flash point greater than or equal to 73°F(23??C) but less than 100°F (38°C). Included in this definition are OSHA IC liquids