Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Hydrogen

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Phase change data

Go To: Top, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director

Quantity Value Units Method Reference Comment
Ttriple0.KN/ARoder, Childs, et al., 1973TRC
Ttriple13.95KN/AClusius and Weigand, 1940Uncertainty assigned by TRC = 0.06 K; see property X for dP/dT for c-l equil.; TRC
Ttriple13.96KN/AHenning and Otto, 1936Uncertainty assigned by TRC = 0.05 K; temperature measured with He gas thermometer; TRC
Quantity Value Units Method Reference Comment
Ptriple0.barN/ARoder, Childs, et al., 1973TRC
Ptriple0.0721barN/AHenning and Otto, 1936Uncertainty assigned by TRC = 0.0004 bar; TRC
Quantity Value Units Method Reference Comment
Tc33.18KN/AOnnes, Crommelin, et al., 1917Uncertainty assigned by TRC = 0.2 K; derived from P-V-T measurements; TRC
Quantity Value Units Method Reference Comment
Pc13.00barN/AOnnes, Crommelin, et al., 1917Uncertainty assigned by TRC = 0.0119 bar; derived from vapor pressure extrapolated to Tc; TRC
Quantity Value Units Method Reference Comment
rhoc15.4mol/lN/AOnnes, Crommelin, et al., 1917Uncertainty assigned by TRC = 2. mol/l; by extrapolation of rectilinear diameter to Tc; TRC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
21.01 - 32.273.5431499.3957.726van Itterbeek, Verbeke, et al., 1964Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


References

Go To: Top, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Roder, Childs, et al., 1973
Roder, H.M.; Childs, G.E.; McCarty, R.D.; Angerhofer, P.E., Survey of the Prop. of the Hydrogen Isotopes Below Their Critical Temp, Natl. Bur. Stand. (U. S.), 1973. [all data]

Clusius and Weigand, 1940
Clusius, K.; Weigand, K., Melting Curves of the Gases A, Kr, Xe, CH4, CH3D, CD4, C2H4, C2H6, COS, and PH3 to 200 Atmospheres Pressure. The Chane of Volume on Melting, Z. Phys. Chem., Abt. B, 1940, 46, 1-37. [all data]

Henning and Otto, 1936
Henning, F.; Otto, J., Vapor pressure curves and triple points in the temperature region from 14 to 90 k, Phys. Z., 1936, 37, 633-8. [all data]

Onnes, Crommelin, et al., 1917
Onnes, H.K.; Crommelin, C.-A.; Cath, P.G., Isothermals of di-atomic substances and their binary mixtures. XIX. A preliminary determination of the critical point of hydrogen., Proc. K. Ned. Akad. Wet., 1917, 20, 178-184. [all data]

van Itterbeek, Verbeke, et al., 1964
van Itterbeek, A.; Verbeke, O.; Theewes, F.; Staes, K.; de Boelpaep, J., The Difference in Vapour Pressure Between Normal and Equilibrium Hydrogen. Vapour Pressure of Normal Hydrogen Between 20 ºK and 32 ºK, Physica (Amsterdam), 1964, 30, 6, 1238-1244, https://doi.org/10.1016/0031-8914(64)90114-4 . [all data]


Notes

Go To: Top, Phase change data, References