Propane, 2-methoxy-

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.


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas-60.24 ± 0.23kcal/molCmPilcher, Pell, et al., 1964ALS
Quantity Value Units Method Reference Comment
Δcgas-657.53 ± 0.22kcal/molCmPilcher, Pell, et al., 1964Corresponding Δfgas = -60.25 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
gas81.64cal/mol*KN/AAndon R.J.L., 1975GT

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References, Notes

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

Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid60.64cal/mol*KN/AAndon and Martin, 1975 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
38.70298.15Andon and Martin, 1975T = 12 to 350 K.

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Mass spectrum (electron ionization), 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil303.9KN/AMajer and Svoboda, 1985 
Quantity Value Units Method Reference Comment
Ttriple127.93KN/AWilhoit, Chao, et al., 1985Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple127.93KN/AAndon and Martin, 1975, 2Uncertainty assigned by TRC = 0.05 K; TRC
Ttriple123.06KN/AAndon and Martin, 1975, 2Metastable crystal phase; Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Tc464.5KN/AMajer and Svoboda, 1985 
Tc464.48KN/AAmbrose, Broderick, et al., 1974Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Pc37.13atmN/AAmbrose, Broderick, et al., 1974Uncertainty assigned by TRC = 0.04 atm; TRC
Quantity Value Units Method Reference Comment
Δvap6.401kcal/molN/AMajer and Svoboda, 1985 
Δvap6.312kcal/molCMajer, Wagner, et al., 1980ALS
Δvap6.31 ± 0.02kcal/molCMajer, Wagner, et al., 1980AC
Δvap6.31kcal/molN/AAmbrose, Ellender, et al., 1976AC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
6.226303.9N/AMajer and Svoboda, 1985 
6.88265.AStephenson and Malanowski, 1987Based on data from 250. to 325. K.; AC
6.79275.AStephenson and Malanowski, 1987Based on data from 260. to 325. K. See also Ambrose, Ellender, et al., 1976.; AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kcal/mol)
    Tr = reduced temperature (T / Tc)

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

Temperature (K) A (kcal/mol) β Tc (K) Reference Comment
298. to 323.10.170.2858464.5Majer and Svoboda, 1985 

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
1.40127.3Domalski and Hearing, 1996AC

Enthalpy of phase transition

ΔHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
1.398127.93crystaline, IliquidAndon and Martin, 1975DH
1.219123.06crystaline, IIliquidAndon and Martin, 1975Metastable crystals.; DH

Entropy of phase transition

ΔStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
10.93127.93crystaline, IliquidAndon and Martin, 1975DH
9.904123.06crystaline, IIliquidAndon and Martin, 1975Metastable; DH

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:


Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References, Notes

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

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
NIST MS number 333

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Notes

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

Pilcher, Pell, et al., 1964
Pilcher, G.; Pell, A.S.; Coleman, D.J., Measurements of heats of combustion by flame calorimetry. Part 2-Dimethyl ether, methyl ethyl ether, methyl n-propyl ether, methyl isopropyl ether, Trans. Faraday Soc., 1964, 60, 499-505. [all data]

Andon R.J.L., 1975
Andon R.J.L., Thermodynamic properties of organic oxygen compounds. 40. Heat capacity and entropy of six ethers, J. Chem. Thermodyn., 1975, 7, 593-606. [all data]

Andon and Martin, 1975
Andon, R.J.L.; Martin, J.F., Thermodynamic properties of organic oxygen compounds. 40. Heat capacity and entropy of six ethers, J. Chem. Thermodynam., 1975, 7, 593-606. [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]

Wilhoit, Chao, et al., 1985
Wilhoit, R.C.; Chao, J.; Hall, K.R., Thermodynamic Properties of Key Organic Compounds in the Carbon Range C1 to C4. Part 1. Properties of Condensed Phases, J. Phys. Chem. Ref. Data, 1985, 14, 1. [all data]

Andon and Martin, 1975, 2
Andon, R.J.L.; Martin, J.F., Thermodynamic Properties of Organic Oxygen Compounds 40. Heat Capacity and Entropy of Six Ethers, J. Chem. Thermodyn., 1975, 7, 593. [all data]

Ambrose, Broderick, et al., 1974
Ambrose, D.; Broderick, B.E.; Townsend, R., The Critical Temperatures and Pressures of Thirty Organic Compounds, J. Appl. Chem. Biotechnol., 1974, 24, 359. [all data]

Majer, Wagner, et al., 1980
Majer, V.; Wagner, Z.; Svoboda, V.; Cadek, V., Enthalpies of vaporization and cohesive energies for a group of aliphatic ethers, J. Chem. Thermodyn., 1980, 12, 387-391. [all data]

Ambrose, Ellender, et al., 1976
Ambrose, D.; Ellender, J.H.; Sprake, C.H.S.; Townsend, R., Thermodynamic properties of organic oxygen compounds XLIII. Vapour pressures of some ethers, The Journal of Chemical Thermodynamics, 1976, 8, 2, 165-178, https://doi.org/10.1016/0021-9614(76)90090-2 . [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]

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]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References