When the electron is stripped from hydrogen chloride's highest orbital, an ion (a charged version of the molecule) survives. (scientificamerican.com)
His early experiments on the composition of hydrogen chloride and hydrochloric acid were published as a successful textbook, Elements of Experimental Chemistry, which ran to its 11th edition by 1829. (sciencemag.org)
Degassing of ash erupted during 1976 by Augustine Volcano in Alaska released 525 x 106 kg of chlorine (± 40 %), of which 82 x 106 to 175 x 106 kg may have been ejected into the stratosphere as hydrogen chloride [HCl]. (realclimate.org)