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Hydrogen Chloride Gas Detection

CAS Number: 7647-01-0
STEL: 5ppm
TWA: 1ppm

Properties

Hydrogen Chloride (HCl) is a colourless to slight yellow corrosive gas with a pungent irritating odour.

Dangers

HCl is a strong irritant to the eyes, nose, and upper respiratory tract. Levels of 35 ppm can cause irritation to the throat even after a very short period of time. Contact with eyes or skin causes inflammation. When inhaled, it irritates mucous membranes in throat or nose, and causes coughing. When substantial amounts are inhaled it can cause pulmonary oedema and even death.

Where is it found

In nature Hydrogen Chloride occurs in volcanic gas and in the human body's gastric juices as hydrochloric acid (HCl dissolved in water). It can be produced by the direct reaction of Hydrogen and Chlorine, or in a laboratory by dripping concentrated Hydrochloric acid into a strong Sulphuric acid solution.

Its main uses are in the production of: medical supplies, pigment dye intermediates, inorganic chlorides, chloroethylene (i.e. vinyl chloride), methyl chloride as well as etchants (i.e. etching solutions). Hydrogen Chloride detection is needed in all chemical plants, semiconductor fabrication facilities, oil refineries, where HCl is generated or discharged in the context of chemical reactions or combustion.

Hydrogen Chloride gas products

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