Materials in this classification can consist of gases, liquids, and solids. The degree of toxicity can range from slight to deadly. Corrosive materials range from mildly active to materials capable of causing deep chemical burns. Corrosive materials include hydrochloric acid, nitric acid, sulfuric acid, carbolic acid, chlorine, phosphorous, lime, caustin, and others. Materials in this classification are all of those which emit alpha, beta, or gamma radiation.
Calcium carbide reacts with water to form lime and acetylene, an explosive gas.
All materials reacting with commonly encountered substances to form dangerous materials are considered to be in this class. The sources of these materials are usually hospitals and clinical and research laboratories. Any agency such as the the Safety Office or member of such an agency called upon to aid in the disposal of dangerous materials takes part in the disposal only to the extent of safeguarding the personnel and property at The University of Texas at Austin as well as the public. It shall be required that personnel having the specific knowledge of the dangerous properties of the material participate in the disposal. Dangerous or hazardous materials falling into the classifications above shall be disposed of in accordance with the best safety practice available.