Chlorine gas, chemical formula Cl ₂. Under normal temperature and pressure, it is a highly toxic gas with a strong irritating odor and a yellow green color. It is suffocating and has a higher density than air. It is soluble in water and alkaline solutions, and is easily soluble in organic solvents (such as carbon disulfide and carbon tetrachloride). It is easy to compress and can be liquefied into a yellow green oily liquid chlorine. It is one of the main products of the chlor alkali industry and can be used as a strong oxidant.
When hydrogen gas with a volume fraction of over 5% is mixed with chlorine gas, there may be a risk of explosion when exposed to strong light. Chlorine gas is toxic, mainly invading the human body through the respiratory tract and dissolving in the water contained in the mucosa, which can cause damage to the upper respiratory mucosa. Chlorine can undergo substitution and addition reactions with organic and inorganic substances to generate various chlorides. Mainly used for the production of plastics (such as PVP), synthetic fibers, dyes, pesticides, disinfectants, bleach solvents, and various chlorides.
In the electronic industry, high-purity chlorine gas is mainly used for dry etching, optical fibers, crystal growth, and thermal oxidation.
