Carbon tetrachloride is a colorless, volatile liquid with a sweet smell. It was commonly used as a solvent and in the production of refrigerants. However, due to its harmful effects on health and the environment, its use has been largely restricted. This chemical compound, with the formula CCl4, is known to be toxic and can cause liver damage and other health issues when inhaled or ingested. Additionally, it contributes to ozone layer depletion, leading to regulations under the Montreal Protocol to limit its production and use.