The Hazard Characteristic Code (HCC) designation for Alkali, Corrosive, Organic. Hazard Group & Comments: An organic alkali (hydrocarbon based), either liquid or solid, meeting the definition of a Corrosive Material (Class 8) under DOT Title 49, Section 173.136, or EPA 40 CFR 370.2, or OSHA 1910.1200, Appendix A that causes visible destruction or irreversible alterations in human skin tissue at the site of contact, or a liquid that has a severe corrosion rate on steel or aluminum