For CHLORINE we have terms and definitions in 9 topics. The topics are Atmospheric Chemistry, Beer Brewing, Cancer, Chlorine, Environment, Paper, Plumbing, Sanitation and Swimming.

CHLORINE (Atmospheric Chemistry)

Cl2, in the stratosphere, atomic (radical) chlorine is very destructive because it depletes the greatly needed ozone layer which protects the earth from ultraviolet radiation from the sun. in the Antarctic stratosphere, molecular chlorine along with nitric acid are formed by the reaction of hydrogen chloride and chlorine nitrate--both stratospheric chlorine reservoir species. This process occurs on polar stratospheric clouds which serve as the reaction sites. Once formed, Cl2 vaporizes into the surrounding air as nitric acid--also formed in that process--binds with the ice matrix. Cl2 is then photodissociated in sunlight (lamda <= 450 nm) into chlorine radicals. These chlorine radicals then catalytic destroy ozone. [Graedel, T. E. and Crutzen, Paul J. Atmospheric Change, An Earth System Perspective. pgs 145-6. W. H. Freeman and Company, 1993.]

CHLORINE (Beer Brewing)

A highly toxic, extremely reactive gas, chemical symbol Cl. In the form of hypochlorite or chloramine, commonly used by municipal water treatment facilities, to kill microorganisms in drinking water. Bleach (hypochlorite) is also commonly used as an equipment cleaner/sanitizer in homebrewing.

CHLORINE (Cancer)

A chemical used to disinfect water and as a bleach.

CHLORINE (Chlorine)

In its "normal" state, chlorine is a greenish yellow gas, but at -34°C it turns to a liquid. It is the eleventh most common element in the earth's crust and is widespread in nature. Chlorine is a key building block of modern chemistry and used in three principal ways: direct use (e.g. to disinfect water); as a raw material for chlorine-containing products (e.g. plastics, pharmaceuticals, pesticides) and as an intermediate to manufacture non-chlorinated products (eg polycarbonates and polyurethanes).

CHLORINE (Environment)

A highly reactive halogen element, used most often in the form of a pungent gas to disinfect drinking water.

CHLORINE (Paper)

Chlorine and its compounds were commonly used to bleach fibers. This has been mostly eliminated. Virgin fibers are generally ECF, meaning no elemental chlorine or TCF meaning the bleaching is done with hydrogen peroxide, oxygen or ozone. Recycled fibers are generally PCF, meaning they were put back into the paper without the use of any chlorine or its compounds. Environmental Defense approves calling 100% post consumer fiber produced without chlorine, TCF.

CHLORINE (Plumbing)

A gas, C2, widely used in the disinfection of water and an oxidizing agent for organic matter, iron, etc.

CHLORINE (Sanitation)

An element ordinarily existing as a greenish-yellow gas about 2.5 times as heavy as air. At atmospheric pressure and a temperature of -30.1 °F, the gas becomes an amber liquid about 1.5 times as heavy as water. The chemical symbol is Cl, atomic weight is 35.457 g, and molecular weight is 70.914 g. Elemental chlorine is diatomic and has the formula Cl2.

CHLORINE (Swimming)

The chemical used by many pools to kill the bacteria in water and keep it clear and safe to swim in.

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