Hydrogen chlorideThe compound hydrogen chloride has the chemical formula HCl and as such is a hydrogen halide. At room temperature, it is a colorless gas, which forms white fumes of hydrochloric acid upon contact with atmospheric water vapor. Read from the Chembox of the Wikipedia article Hydrogen chloride, revision 1380000181.

Property

Value

Formula

HCl, 36.46 g/mol

Melting point

-114.22 °C

Boiling point

-85.05 °C

Density

0.00149 g/cm³

pKa

-3

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