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substance: hydrogen chloride trade names/synonyms: hydrochloric acid, anhydrous; hydrogen chloride; spirits of salt; muriatic acid; hydrochloric acid; hydrochloric acid gas; anhydrous hydrochloric acid; hydrogen chloride (hcl); un 1050 chemical family: halogenated, gas creation date: sept 20, 2009 revision date: dec. 15, 2009 2. composition, information on ingredients component: hydrogen chloride cas number: 7647-01-0 percentage: 100 3. hazards identification nfpa ratings (scale 0-4): health=3 fire=0 reactivity=1
For example, reacting pyridine (C5H5N) with hydrochloric acid (HCl) yields its hydrochloride salt, pyridinium chloride. The molecular formula is either written as C5H5NÂ·HCl or as C5H5NH+ Clâ. Hydrochloric salts are most often referred to by using the name of the base, then simply tagging on hydrochloride or HCl. For example, while crack cocaine is the free base of cocaine, the salt form is often referred to as cocaine, the drug, HCl.