Hydrogen chloride

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A colorless, fuming gas with a suffocating odor. Hydrogen chloride is the byproduct in the production of organic chlorides. It is used in organic synthesis and for the chlorination of rubber.

Synonyms and Related Terms

muriatic acid gas; anhydrous hydrochloric acid

Chemical structure

Hydrogen chloride.jpg

Other Properties

Soluble in water, ethanol and ether.

Composition HCl
CAS 7647-01-0
Melting Point -114
Density 1.00
Molecular Weight mol. wt. = 36.5
Boiling Point -85

Hazards and Safety

Nonflammable. Avoid all contact. Corrosive to skin and eyes. Toxic by inhalation.

LINK: International Chemical Safety Card

Sources Checked for Data in Record

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 464
  • Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4835
  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998