DETHERM ... on the WEB


Substance identifiers:

  1. helium (CAS RN: 7440-59-7)
    • He
    • helium-4
    • o-helium
    • p-helium
    • refrigerant 704
  2. xenon (CAS RN: 7440-63-3)
    • Xe

Available physical property data:

PropertyPhaseNo. of tablesNo. of linesLink to data
critical pressure213View
critical temperature213View
critical volume111View
diffusion coefficientG28View
sound velocityG2482View
sound velocityG1176View
sound velocityG2176View
thermal conductivityG10254View
vapor-liquid equilibrium, isothermal3199View
viscosity, dynamic1110View
viscosity, dynamicG340View
© DECHEMA e.V. Terms of Use Privacy Contact Imprint

Aim of this website?

This website allows you to search online within DECHEMA's numerical databases:

  • DETHERM: thermophysical properties of pure substances and mixtures
  • CHEMSAFE: recommended safety data of gases, liquids and dusts

Even without registration you can search and preview the databases.

With registration you can also download the data in various formats:

  • Direct display
  • PDF
  • XLS
  • IKC

EU-Citizens only:

Please choose your country for proper VAT calculation

For electronic delivery to countries outside the European Union (EU):

  • VAT is not charged, if you supply a Tax Payer Certificate of your country.
  • German VAT is charged, if you do not supply a Tax Payer Certificate.