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Methylamine

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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Tboil266.8 ± 0.3KAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus180.05KN/ARoberts, Emeleus, et al., 1939Uncertainty assigned by TRC = 0.4 K; TRC
Tfus180.05KN/AEmeleus and Briscoe, 1937Uncertainty assigned by TRC = 0.3 K; TRC
Tfus179.7KN/AMcNeight and Smyth, 1936Uncertainty assigned by TRC = 0.07 K; TRC
Quantity Value Units Method Reference Comment
Ttriple179.7KN/AAston, Siller, et al., 1937Uncertainty assigned by TRC = 0.07 K; T0/K=273.16; TRC
Quantity Value Units Method Reference Comment
Tc430.85KN/ALi and Kiran, 1988Uncertainty assigned by TRC = 0.5 K; TRC
Tc430.7KN/AKay and Young, 1974Uncertainty assigned by TRC = 0.2 K; TRC
Tc430.05KN/ABerthoud, 1917Uncertainty assigned by TRC = 0.7 K; TRC
Quantity Value Units Method Reference Comment
Pc76.50barN/ALi and Kiran, 1988Uncertainty assigned by TRC = 1.00 bar; TRC
Pc76.14barN/AKay and Young, 1974Uncertainty assigned by TRC = 0.04 bar; TRC
Pc74.5752barN/ABerthoud, 1917Uncertainty assigned by TRC = 0.6079 bar; TRC
Quantity Value Units Method Reference Comment
Vc0.1385l/molN/ALi and Kiran, 1988Uncertainty assigned by TRC = 0.001 l/mol; TRC
Quantity Value Units Method Reference Comment
Deltavap23.85kJ/molN/AMajer and Svoboda, 1985 

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
25.811266.84N/AAston, Siller, et al., 1937, 2DH
25.6266.8N/AMajer and Svoboda, 1985 
24.8334.AStephenson and Malanowski, 1987Based on data from 319. - 381. K.; AC
23.5388.AStephenson and Malanowski, 1987Based on data from 373. - 430. K.; AC
26.1278.AStephenson and Malanowski, 1987Based on data from 263. - 329. K.; AC
27.2258.AStephenson and Malanowski, 1987Based on data from 223. - 273. K. See also Dykyj, 1970.; AC
25.81 ± 0.13266.84VAston, Siller, et al., 1937, 3ALS
27.4252.N/AAston, Siller, et al., 1937, 2Based on data from 190. - 267. K. See also Boublik, Fried, et al., 1984.; AC

Entropy of vaporization

DeltavapS (J/mol*K) Temperature (K) Reference Comment
96.73266.84Aston, Siller, et al., 1937, 2DH

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
190.06 - 266.924.5201034.977-37.574Aston, Siller, et al., 1937, 2Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
6.134179.70Aston, Siller, et al., 1937, 2DH
6.13179.7Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
34.13179.70Aston, Siller, et al., 1937, 2DH

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.

Roberts, Emeleus, et al., 1939
Roberts, E.R.; Emeleus, H.J.; Briscoe, H.V.A., Preparation and Prop. of Ethyldideuteramine and Dimethyldeuteramine, J. Chem. Soc., 1939, 1939, 41. [all data]

Emeleus and Briscoe, 1937
Emeleus, H.J.; Briscoe, H.V.A., Preparation and Properties of Methyldideuteramine, J. Chem. Soc., 1937, 1937, 127. [all data]

McNeight and Smyth, 1936
McNeight, S.A.; Smyth, C.P., Non-Rotation of Molecules in a Number of Solids, J. Am. Chem. Soc., 1936, 58, 1718. [all data]

Aston, Siller, et al., 1937
Aston, J.G.; Siller, C.W.; Messerly, G.H., Heat Capacities and Entropies of Organic Compounds III. Methylamine from 11.5 K to the Boiling Point. Heat of Vaporization and Vapor Pressure. The Entropy from Molecular Data, J. Am. Chem. Soc., 1937, 59, 1743. [all data]

Li and Kiran, 1988
Li, L.; Kiran, E., Gas-Liquid Critical Properties of Methylamine + Nitrous Oxide and Methylamine + Ethylene Binary Mixtures, J. Chem. Eng. Data, 1988, 33, 342. [all data]

Kay and Young, 1974
Kay, W.B.; Young, C.L., Int. DATA Ser., Sel. Data Mixtures, Ser. A, 1974, No. 2, 158. [all data]

Berthoud, 1917
Berthoud, A., Determination of Critical Temperatures and Pressures of Amines and Alkyl Chlorides, J. Chim. Phys. Phys.-Chim. Biol., 1917, 15, 3. [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]

Aston, Siller, et al., 1937, 2
Aston, J.G.; Siller, C.W.; Messerly, G.H., Heat capacities and entropies of organic compounds. III. Methylamine from 12K to the boiling point. Heat of vaporization and vapor pressure. The entropy from molecular data, J. Am. Chem. Soc., 1937, 59, 1743-1751. [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]

Dykyj, 1970
Dykyj, J., Petrochemica, 1970, 10, 2, 51. [all data]

Aston, Siller, et al., 1937, 3
Aston, J.G.; Siller, C.W.; Messerly, G.H., Heat capacities and entropies of organic compounds. III. Methylamine from 11.5°K. to the boiling point. Heat of vaporization and vapor pressure. The entropy from molecular data, J. Am. Chem. Soc., 1937, 59, 1743-17. [all data]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [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

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