{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T00:21:55Z","timestamp":1792801315837,"version":"4.5.0"},"reference-count":33,"publisher":"AIP Publishing","issue":"4","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2011,12,1]]},"abstract":"<jats:p>New reference equations, adopted by the International Association for the Properties of Water and Steam (IAPWS), are presented for the sublimation pressure and melting pressure of ice Ih as a function of temperature. These equations are based on input values derived from the phase-equilibrium condition between the IAPWS-95 scientific standard for thermodynamic properties of fluid H2O and the equation of state of H2O ice Ih adopted by IAPWS in 2006, making them thermodynamically consistent with the bulk-phase properties. Compared to the previous IAPWS formulations, which were empirical fits to experimental data, the new equations have significantly less uncertainty. The sublimation-pressure equation covers the temperature range from 50\u2009K to the vapor\u2013liquid\u2013solid triple point at 273.16\u2009K. The ice Ih melting-pressure equation describes the entire melting curve from 273.16\u2009K to the ice Ih\u2013ice III\u2013liquid triple point at 251.165\u2009K. For completeness, we also give the IAPWS melting-pressure equation for ice III, which is slightly adjusted to agree with the ice Ih melting-pressure equation at the corresponding triple point, and the unchanged IAPWS melting-pressure equations for ice V, ice VI, and ice VII.<\/jats:p>","DOI":"10.1063\/1.3657937","type":"journal-article","created":{"date-parts":[[2011,12,31]],"date-time":"2011-12-31T02:01:44Z","timestamp":1325296904000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":140,"title":["New Equations for the Sublimation Pressure and Melting Pressure of H2O Ice Ih"],"prefix":"10.1063","volume":"40","author":[{"given":"Wolfgang","family":"Wagner","sequence":"first","affiliation":[{"name":"Ruhr-Universit\u00e4t Bochum Lehrstuhl f\u00fcr Thermodynamik, , D-44780 Bochum, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Riethmann","sequence":"additional","affiliation":[{"name":"Ruhr-Universit\u00e4t Bochum Lehrstuhl f\u00fcr Thermodynamik, , D-44780 Bochum, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rainer","family":"Feistel","sequence":"additional","affiliation":[{"name":"Leibniz-Institut f\u00fcr Ostseeforschung, Seestra\u00dfe 15, D-18119 Warnem\u00fcnde, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Allan H.","family":"Harvey","sequence":"additional","affiliation":[{"name":"Thermophysical Properties Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2011,12,5]]},"reference":[{"key":"2023080301372823100_c1","doi-asserted-by":"publisher","first-page":"515","DOI":"10.1063\/1.555947","volume":"23","year":"1994","journal-title":"J. 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