Carbon Tet is a commonly used abbreviation for the substance carbon tetrachloride. It is a colorless and toxic liquid that is widely used in the chemical industry as a solvent and as a fire extinguishing agent. However, because of its hazardous properties, carbon tet is gradually becoming phased out. In order to avoid using this dangerous substance, there are many synonyms that can be used instead. These include tetrachloromethane, perchloromethane, CCl4, and carbon chloride. It is important to choose alternative substances that are safer for your health and the environment.