Freons are chlorofluorocarbon compounds of methane and ethane. They are stable, unreactive, non-toxic, non-corrosive, and easily liquefiable gases. Freon 12 (CCl₂F₂) is a common industrial freon used in refrigeration and air conditioning, produced from tetrachloromethane by the Swarts reaction.

Carbon tetrachloride, when released into the air, rises to the atmosphere and contributes to ozone layer depletion. This depletion is associated with increased human exposure to ultraviolet rays, potentially leading to skin cancer, eye diseases, immune system disorders, and other ...

Exposure to carbon tetrachloride can cause dizziness, light-headedness, nausea, and vomiting, leading to permanent damage to nerve cells. In severe cases, it can result in stupor, coma, unconsciousness, or death. The chemical may also make the heart beat irregularly or ...

Carbon tetrachloride is used in the production of refrigerants, propellants, chlorofluorocarbons, pharmaceuticals, and general solvents. Until the mid-1960s, it was widely used as a cleaning fluid, both as a degreasing agent in industry and a spot remover in homes.

Chloroform is stored in closed, dark-colored bottles to prevent exposure to light, as it can oxidize to form the poisonous gas carbonyl chloride (phosgene). Its use as an antiseptic has been phased out due to its objectionable smell, and it ...