Critical points of the elements (data page)

David R. Lide (ed), CRC Handbook of Chemistry and Physics, 85th Edition, online version.

Boca Raton, Florida, 2003; Section 6, Fluid Properties; Critical Constants.

Also agrees with Celsius values from Section 4: Properties of the Elements and Inorganic Compounds, Melting, Boiling, Triple, and Critical Point Temperatures of the Elements J.A.

Dean (ed), Lange's Handbook of Chemistry (15th Edition), McGraw-Hill, 1999; Section 6; Table 6.5 Critical Properties National Physical Laboratory, Kaye and Laby Tables of Physical and Chemical Constants; D. Ambrose, M.B.

McGlashan, Critical constants and second virial coefficients of gases (retrieved Dec 2005) W.E.