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HCl, anhydrous hydrochloric acid. Its molecular
weight is 36.47 g/mol; it is a colorless, corrosive gas. Hydrogen chloride is a
covalent bonded nonflammable gas and ionizes almost completely when dissolved in
water. When dissolved in water, hydrogen chloride forms a strong acid,
hydrochloric acid. In the stratosphere, HCl acts as a reservoir species
temporarily removing chlorine radicals from a catalytic ozone destruction cycle.
(See ozone and chlorine.)
[The journal of Physical Chemistry; v 98; p 2836;
1994] [New Scientist; v 137; p 19; 1993.]
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