This application enables data on many gas molecules to be accessed rapidly.
You can search on a raw chemical formula, chemical name or UN transportation code. The values displayed on this page are extracted from the literature and the proprietary current AIR LIQUIDE Group data.

After you have chosen the molecule, you can choose the units in which you wish the numerical values to be displayed.

• Physical properties of gases:
Retrieve the major physical characteristics of the molecules in solid, liquid, gaseous or supercritical state.
For a given volume or mass of gas, calculate the equivalent in gaseous and liquid phase.
Calculate the density of the liquid phase at any point on the liquid-gas equilibrium curve for nitrogen, carbon dioxide, argon, hydrogen or oxygen.
Download the vapor pressure curve for some gases.
• Safety:
Safety Data Sheets (SDS) are available in 3 languages.
• Major applications in industry and healthcare
• Material compatibility