Chlorofluorocarbon Propellants

Halogenated hydrocarbons are relatively nonreactive chemicals with very high vapor pressure that have been used to blow products out of containers through a tiny hole. Their widespread use in the early 1960s was followed by an epidemic of aerosol sniffing that led to cardiac arrhythmias and death among young people. The halogens— chlorine, fluorine, and bromine—are used to make various chemicals for purposes ranging from pro-pellants and refrigerants to fire extinguishers. Their use has been severely limited since the recognition that their release into the atmosphere depletes the upper layers of ozone, exposing the earth to excessive amounts of ultraviolet radiation. Freon is a brand name for a family of commercial products.

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