Freons released into the atmosphere, including those used in refrigeration, eventually reach the stratosphere. In the stratosphere, freons can initiate radical chain reactions that disturb the natural ozone balance, posing a significant environmental concern related to ozone layer depletion.

Freon 12 is manufactured from tetrachloromethane using the Swarts reaction. Freons are widely used in industrial applications for aerosol propellants, refrigeration, and air conditioning.

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 ...

Chloroform was once used as a general anesthetic in surgery, but it has been replaced by safer alternatives like ether due to its potential to depress the central nervous system and cause health issues upon inhalation.

Chloroform is utilized as a solvent for fats, alkaloids, iodine, and other substances. Its major contemporary application is in the production of the freon refrigerant R-22.

Direct skin contact with methylene chloride causes intense burning and mild redness. Eye contact can burn the cornea. These effects highlight the importance of handling this compound with caution due to its potential harm to human health.