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, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus365.3KN/ASeyer, Patterson, et al., 1944Uncertainty assigned by TRC = 2. K; TRC
Tfus365.3KN/ACarothers, Hill, et al., 1930Uncertainty assigned by TRC = 1.5 K; TRC
Tfus366.2KN/ASinnatt and Barasch, 1920Uncertainty assigned by TRC = 3. K; TRC
Quantity Value Units Method Reference Comment
Δvap252.5 ± 0.2kJ/molCGCChickos, Wang, et al., 2008Based on data from 323. - 523. K.; AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
149.618.A,EStephenson and Malanowski, 1987Based on data from 603. - 852. K. See also Kudchadker and Zwolinski, 1966.; AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
185.366.9Hammami and Mehrotra, 1995AC

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:


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.

Seyer, Patterson, et al., 1944
Seyer, W.F.; Patterson, R.F.; Keays, J.L., The Density and Transition Points of the n-Paraffin Hydrocarbons, J. Am. Chem. Soc., 1944, 66, 179-82. [all data]

Carothers, Hill, et al., 1930
Carothers, W.H.; Hill, J.W.; Kirby, J.E.; Jacobson, R.A., Studies on Polymerization and Ring Formation. VII. Normal Paraffin Hydro- carbons of High Molecular Weight Prepared by the Action of Sodium on Decamethylene Bormide, J. Am. Chem. Soc., 1930, 52, 5279. [all data]

Sinnatt and Barasch, 1920
Sinnatt, F.S.; Barasch, M., J. Soc. Chem. Ind. London, 1920, 39, 289A. [all data]

Chickos, Wang, et al., 2008
Chickos, James; Wang, Tracy; Sharma, Esseim, Hypothetical Thermodynamic Properties: Vapor Pressures and Vaporization Enthalpies of the Even n -Alkanes from C 40 to C 76 at T = 298.15 K by Correlation-Gas Chromatography. Are the Vaporization Enthalpies a Linear Function of Carbon Number?, J. Chem. Eng. Data, 2008, 53, 2, 481-491, . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, . [all data]

Kudchadker and Zwolinski, 1966
Kudchadker, A.P.; Zwolinski, B.J., Vapor Pressure and Boiling Points of Normal Alkanes, C 21 to C 100 ., J. Chem. Eng. Data, 1966, 11, 2, 253-255, . [all data]

Hammami and Mehrotra, 1995
Hammami, Ahmed; Mehrotra, Anil K., Liquid-solid-solid thermal behaviour of n-C44H90 + n-C50H102 and n-C25H52 + n-C28H58 paraffinic binary mixtures, Fluid Phase Equilibria, 1995, 111, 2, 253-272, . [all data]


Go To: Top, Phase change data, References