Under solid (grey), liquid (blue) and vapor states (white) along the equilibrium curves
Critical Point
Triple Point
Calculate a liquid or gas volume or a mass
At boiling point at 1.013 bar
in standard conditions (1,013 bar, 15°C)
Examples of uses of this molecule in Industry and Healthcare
The chemicals industry uses hydrogen chloride to produce a large variety of organic chlorinated compounds. Chlorinated metals (such as aluminium or silicon chlorides) are produced with hydrogen chloride.
ChemicalsHydrogen chloride is used in calibration gas mixtures for environmental emission monitoring.
Laboratories & Research CentersHydrometallurgy processes use hydrogen chloride to enhance the separation coefficient of ores. Hot galvanizing process can use hydrogen chloride.
Metal fabricationUsed with xenon in "excimer" lasers, hydrogen chloride can produce wavelengths which vary as a function of operating conditions.
Hydrogen chloride is used in semiconductor fabrication for etching of native oxide, Chemical Vapor Deposition (CVD) reactor cleaning or moisture getter.
Electronic componentsInformation to safely use this molecule
Pungent and suffocating
Recommendations : Air Liquide has gathered data on the compatibility of gases with materials to assist you in evaluating which materials to use for a gas system. Although the information has been compiled from what Air Liquide believes are reliable sources (International Standards: Compatibility of cylinder and valve materials with gas content; Part 1- Metallic materials: ISO11114-1 (March 2012), Part 2 - Non-metallic materials: ISO11114-2 (April 2013), it must be used with extreme caution and engineering judgement. No raw data such as these can cover all conditions of concentration, temperature, humidity, impurities and aeration. It is therefore recommended that this table is only used to identify possible materials for applications at high pressure and ambient temperature. Extensive investigation and testing under the specific conditions of use need to be carried out to validate a material selection for a given application. Contact the regional Air Liquide team for expertise service.
General information
Joseph Priestley prepared hydrogen chloride in 1772 and, in 1818, Humphry Davy established that it is composed of hydrogen and chlorine.