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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Boiling point

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Administrative data

Link to relevant study record(s)

Description of key information

The data requirement is waived, but the discussion enables to conclude that the boiling point is <= -191°C at 1 atm.

Key value for chemical safety assessment

Additional information

Since the substance is a gas made at ~97% of the following three constituents, it can be deduced that its boiling point is <= -191°C at 1 atm:

  • Carbon monoxide: -191.5 °C at 1 atm from two sources (Air Liquide. Gas Encyclopedia - CO. Available on-line at http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=45, consulted 05/20/2016) (Lide, D.R. CRC Handbook of Chemistry and Physics 88TH Edition 2007-2008. CRC Press, Taylor & Francis, Boca Raton, FL, 2007, p. 3-88).
  • Hydrogen: -252.8°C at 1 atm from two sources (Air Liquide. Gas Encyclopedia - H2. Available on-line at http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=36, consulted 05/20/2016) (Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 821).
  • Nitrogen: -195.8°C at 1 atm from two sources (Air Liquide. Gas Encyclopedia - N2. Available on-line at http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=5, consulted 05/20/2016) (O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013., p. 1228).