Gases

Sulfur Dioxide

Sulfur dioxide is used as a reducing agent in metallurgy, as a coolant in the refrigeration industry, as a disinfectant and bleach, in the preservation of foodstuffs, for dechlorination and as a fumigant.

Chlorine

Chlorine is used to sterilize drinking water and in the manufacture of many consumer products such as paper, dyestuffs, textiles, petroleum products, medicines, antiseptics, insecticides, foodstuffs, solvents, paints and plastics, especially PVC. It is also used to produce bleaches, chlorates, chloroform, carbon tetrachloride and bromine. A further substantial use for this element is in organic chemistry, both as an oxidizing agent and in substitution reactions.