Chlorine
Chlorine is usually obtained by the electrolysis of alkali metal chlorides, in particular sodium chloride.
Chlorine is a greenish-yellow suffocating, corrosive gas that is 2.5 times denser than air, slightly soluble in water and easily liquefiable. It is usually transported in steel cylinders, tanks, railway tank cars or barges.
Chlorine destroys color and degrades organic materials. It is used for bleaching plant (but not animal) fibers, as well as for obtaining wood pulp. Due to its disinfecting and antiseptic properties, it is used for water purification (chlorination). It is applied in the metallurgy of gold, tin and cadmium, in the production of hypochlorites, metal chlorides and carbonyl chlorides, in organic synthesis (for example, synthetic dyes, artificial waxes, chlorinated rubber).
Source: "Explanations to the Harmonized System of Goods Nomenclature for Foreign Economic Activity of the Russian Federation (HSN of Russia)" (prepared by the Federal Customs Service of Russia) (volume 1, sections I - VI, groups 1 - 29)