Methenamine

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Gas phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas199. ± 3.kJ/molCcrMansson, Rapport, et al., 1970ALS
Δfgas197.9kJ/molN/ADelepine and Badoche, 1942Value computed using ΔfHsolid° value of 123.0 kj/mol from Delepine and Badoche, 1942 and ΔsubH° value of 74.9 kj/mol from Mansson, Rapport, et al., 1970.; DRB

Condensed phase thermochemistry data

Go To: Top, Gas 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfsolid124.1 ± 0.75kJ/molCcrMansson, Rapport, et al., 1970ALS
Δfsolid123.0kJ/molCcbDelepine and Badoche, 1942Author's hf298_condensed=27.10 kcal/mol; ALS
Quantity Value Units Method Reference Comment
Δcsolid-4200.11 ± 0.67kJ/molCcrMansson, Rapport, et al., 1970ALS
Δcsolid-4199.1kJ/molCcbDelepine and Badoche, 1942Author's hf298_condensed=27.10 kcal/mol; ALS
Quantity Value Units Method Reference Comment
solid,1 bar163.38J/mol*KN/AWestrum, 1961DH
solid,1 bar163.38J/mol*KN/AChang and Westrum, 1960DH

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
152.29298.15Westrum, 1961T = 5 to 350 K. Only value at 298.15 K given.; DH
152.29298.15Chang and Westrum, 1960T = 5 to 350 K.; DH

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry 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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δsub79.6 ± 0.4kJ/molGSVerevkin, 2002Based on data from 339. to 378. K.; AC
Δsub75. ± 3.kJ/molVMansson, Rapport, et al., 1970ALS
Δsub74.9kJ/molN/AMansson, Rapport, et al., 1970DRB
Δsub74.9 ± 2.9kJ/molN/AWada, Kishida, et al., 1960See also Westrum, Mansson, et al., 1970.; AC

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
77.7 ± 0.4359.GSVerevkin, 2002Based on data from 339. to 378. K.; AC
76.8313.AStephenson and Malanowski, 1987Based on data from 298. to 453. K.; AC
78.8316.TE,MEDe Wit, Van Miltenburg, et al., 1983Based on data from 302. to 328. K.; AC
74.1 ± 0.8289.TEBudurov, 1960Based on data from 281. to 298. K.; AC

References

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

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

Mansson, Rapport, et al., 1970
Mansson, M.; Rapport, N.; Westrum, E.F., Jr., Enthalpies of formation of globular molecules. I. Adamantane and hexamethylenetetramine, J. Am. Chem. Soc., 1970, 92, 7296-7299. [all data]

Delepine and Badoche, 1942
Delepine, M.; Badoche, M., Thermochimie de l'aldehyde formique, de l'hexamethylene-tetramine et de ses derive, C. R. Acad. Sci. Paris, 1942, 214, 777-780. [all data]

Westrum, 1961
Westrum, E.F., Jr., The thermophysical properties of three globular molecules, J. Phys. Chem. Solids, 1961, 18, 83-85. [all data]

Chang and Westrum, 1960
Chang, S.-S.; Westrum, E.F., Jr., Heat capacities and thermodynamic properties of globular molecules. I. Adamantane and hexamethylenetetramine, J. Phys. Chem., 1960, 64, 1547-1551. [all data]

Verevkin, 2002
Verevkin, Sergey P., Relationships among strain energies of mono- and poly-cyclic cyclohexanoid molecules and strain of their component rings, The Journal of Chemical Thermodynamics, 2002, 34, 2, 263-275, https://doi.org/10.1006/jcht.2001.0896 . [all data]

Wada, Kishida, et al., 1960
Wada, Tadayoshi; Kishida, Etsuko; Tomiie, Yujiro; Suga, Hiroshi; Seki, Syûzô; Nitta, Isamu, Crystal Structure and Thermodynamical Investigations of Triethylenediamine, C6H12N2, Bull. Chem. Soc. Jpn., 1960, 33, 9, 1317-1318, https://doi.org/10.1246/bcsj.33.1317 . [all data]

Westrum, Mansson, et al., 1970
Westrum, Edgar F.; Mansson, Margret.; Rapport, Naomi., Enthalpies of formation of globular molecules. I. Adamantane and hexamethylenetetramine, J. Am. Chem. Soc., 1970, 92, 25, 7296-7299, https://doi.org/10.1021/ja00728a011 . [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]

De Wit, Van Miltenburg, et al., 1983
De Wit, H.G.M.; Van Miltenburg, J.C.; De Kruif, C.G., Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen, and sulphur 1. Vapour pressures and enthalpies of sublimation, The Journal of Chemical Thermodynamics, 1983, 15, 7, 651-663, https://doi.org/10.1016/0021-9614(83)90079-4 . [all data]

Budurov, 1960
Budurov, S., Izv. Khim. Inst. Bulg. Akad. Nauk, 1960, 7, 281. [all data]


Notes

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