Skip to main content

Pharmaceuticals and Biotechnology


Quick Access



High-purity ammonia

CAS Number: 7664-41-7
UN1005 (gas)

Ammonia is used for heat treatment in metal fabrication, automotive and aeronautics.

Ammonia is used in calibration gas mixtures for petrochemical industry, environmental emission monitoring, industrial hygiene monitors and trace impurity analyzers.

Ammonia replaces chlorofluorocarbons as refrigerating fluid.

Gas Properties

Please consult Air Liquide's Gas Encyclopedia, available in English and French, allowing users to quickly access a host of information on the physical and chemical properties of gas molecules, indicating the material compatibilities of various gases and describing their main industrial applications.


You would like to increase your productivity, simplify the management of your gas supplies and improve the yield of your process or production sites. At the same time, you have to meet higher safety standards in order to conform to regulations and address environmental demands. Air Liquide has a full spectrum of services to meet your needs.