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Butane, 2,2,3,3-tetramethyl-

Data at NIST subscription sites:

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Phase change data

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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DRB - Donald R. Burgess, Jr.
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil379.6 ± 0.5KAVGN/AAverage of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus374. ± 3.KAVGN/AAverage of 20 out of 21 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple373.97KN/AScott, Douslin, et al., 1952Crystal phase 1 phase; Uncertainty assigned by TRC = 0.07 K; TRC
Quantity Value Units Method Reference Comment
Deltavap10.26kcal/molN/AMajer and Svoboda, 1985 
Deltavap10.26kcal/molCOsborne and Ginnings, 1947ALS
Quantity Value Units Method Reference Comment
Deltasub10.365 ± 0.050kcal/molVScott, Douslin, et al., 1952, 2ALS
Deltasub10.4 ± 0.05kcal/molN/AScott, Douslin, et al., 1952, 2Based on data from 273. - 338. K. See also Cox and Pilcher, 1970.; AC
Deltasub10.3 ± 0.2kcal/molCOsborne and Ginnings, 1947, 2AC
Deltasub10.3kcal/molN/AProsen and Rossini, 1945DRB

Reduced pressure boiling point

Tboil (K) Pressure (atm) Reference Comment
379.71.01Aldrich Chemical Company Inc., 1990BS

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
79.6383.AStephenson and Malanowski, 1987Based on data from 377. - 390. K.; AC

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
273. - 338.5.077641724.764-38.383Scott, Douslin, et al., 1952, 3Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
10.4301.N/AStephenson and Malanowski, 1987Based on data from 286. - 377. K.; AC
13.4263. - 279.A,MGLinder, 1930AC

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
1.80373.9Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
3.133152.5Domalski and Hearing, 1996CAL
4.818373.9

Enthalpy of phase transition

DeltaHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.4780152.5crystaline, IIcrystaline, IScott, Douslin, et al., 1952, 2DH
1.802373.9crystaline, IliquidScott, Douslin, et al., 1952, 2DH
0.4799148.1crystaline, IIcrystaline, IParks, Huffman, et al., 1930DH

Entropy of phase transition

DeltaStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
3.133152.5crystaline, IIcrystaline, IScott, Douslin, et al., 1952, 2DH
4.821373.9crystaline, IliquidScott, Douslin, et al., 1952, 2DH
3.241148.1crystaline, IIcrystaline, IParks, Huffman, et al., 1930DH

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.

Scott, Douslin, et al., 1952
Scott, D.W.; Douslin, D.R.; Gross, M.E.; Oliver, G.D.; Huffman, H.M., 2,2,3,3-Tetramethylbutane: Heat Caqpacity, Heats of Transition, Fusion and Sublimation, Vapor Pressure, Entropy and Thermodynamic Functions, J. Am. Chem. Soc., 1952, 74, 883. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Osborne and Ginnings, 1947
Osborne, N.S.; Ginnings, D.C., Measurements of heat of vaporization and heat capacity of a number of hydrocarbons, J. Res. NBS, 1947, 39, 453-477. [all data]

Scott, Douslin, et al., 1952, 2
Scott, D.W.; Douslin, D.R.; Gross, M.E.; Oliver, G.D.; Huffman, H.M., 2,2,3,3-Tetramethylbutane: Heat capacity, heats of transition, fusion and sublimation, vapor pressure, entropy and thermodynamic functions, J. Am. Chem. Soc., 1952, 74, 883-887. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Osborne and Ginnings, 1947, 2
Osborne, Nathan S.; Ginnings, Defoe C., Measurements of heat of vaporization and heat capacity of a number of hydrocarbons, J. RES. NATL. BUR. STAN., 1947, 39, 5, 453-17, https://doi.org/10.6028/jres.039.031 . [all data]

Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D., Heats of combustion and formation of the paraffin hydrocarbons at 25° C, J. Res. NBS, 1945, 263-267. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Scott, Douslin, et al., 1952, 3
Scott, D.W.; Douslin, D.R.; Gross, M.E.; Oliver, G.D.; Huffman, H.M., 2,2,3,3-Tetramethylbutane: Heat Capacity, Heats of Transition, Fusion and Sublimation, Vapor Pressure, Entropy and Thermodynamic Functions, J. Am. Chem. Soc., 1952, 74, 4, 883-886, https://doi.org/10.1021/ja01124a007 . [all data]

Linder, 1930
Linder, E.G., Vapor Pressures of Some Hydrocarbons, J. Phys. Chem., 1930, 35, 2, 531-535, https://doi.org/10.1021/j150320a010 . [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Parks, Huffman, et al., 1930
Parks, G.S.; Huffman, H.M.; Thomas, S.B., Thermal data on organic compounds. VI. The heat capacities, entropies and free energies of some saturated, non-benzenoid hydrocarbons, J. Am. Chem. Soc., 1930, 52, 1032-1041. [all data]


Notes

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