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isopropylurea

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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
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
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

Quantity Value Units Method Reference Comment
Tfus427.4KN/ADellaGatta and Ferro, 1987Crystal phase 1 phase; Uncertainty assigned by TRC = 0.4 K; TRC
Quantity Value Units Method Reference Comment
Ttriple430.KN/AKabo, Miroshnichenko, et al., 1990Uncertainty assigned by TRC = 0.00001 K; TRC

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
23.1 ± 0.38353.MEZaitsau, Kabo, et al., 2003Based on data from 333. - 372. K.; AC
23.1 ± 0.38350.MEZaitsau, Kabo, et al., 2003Based on data from 333. - 372. K.; AC
23.2 ± 0.1350.CZaitsau, Kabo, et al., 2003AC
23.8 ± 0.33354.CKabo, Miroshnichenko, et al., 1990, 2see Simirsky, Kabo, et al., 1987 and Simirskii, Kabo, et al., 1986; ALS
24.04 ± 0.31389.N/APiacente, Ferro, et al., 1990AC

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
4.1587427.4Della Gatta and Ferro, 1987DH
4.18429.Kabo, Miroshnichenko, et al., 1990, 2AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
9.73427.4Della Gatta and Ferro, 1987DH

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
9.749429.Kabo, Miroshnichenko, et al., 1990, 3CAL
1.47375.5
1.20280.8

Enthalpy of phase transition

DeltaHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.5521375.5crystaline, IIcrystaline, IDella Gatta and Ferro, 1987DH

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

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

DellaGatta and Ferro, 1987
DellaGatta, G.; Ferro, D., Enthalpies of fusion and solid-to-solid transition, entropies of fusion for urea and twelve alkylurea, Thermochim. Acta, 1987, 122, 143-52. [all data]

Kabo, Miroshnichenko, et al., 1990
Kabo, G.Ya.; Miroshnichenko, E.A.; Frenkel, M.L.; Kozyro, A.A.; Simirsky, V.V.; Krasulin, A.P.; Vorob'eva, V.P.; Lebedev, Yu.A., Thermochemistry of Alkyl Derivatives of Urea, Izv. Akad. Nauk SSSR, Ser. Khim., 1990, No. 4, 750-5. [all data]

Zaitsau, Kabo, et al., 2003
Zaitsau, Dz; Kabo, G.J.; Kozyro, A.A.; Sevruk, V.M., The effect of the failure of isotropy of a gas in an effusion cell on the vapor pressure and enthalpy of sublimation for alkyl derivatives of carbamide, Thermochimica Acta, 2003, 406, 1-2, 17-28, https://doi.org/10.1016/S0040-6031(03)00231-4 . [all data]

Kabo, Miroshnichenko, et al., 1990, 2
Kabo, G.Ya.; Miroshnichenko, E.A.; Frenkel, M.L.; Kozyro, A.A.; Simirskii, V.V.; Krasulin, A.P.; Vorob'eva, V.P.; Lebedev, Yu.A., Thermochemistry of urea alkyl derivatives, Bull. Acad. Sci. USSR, Div. Chem. Sci., 1990, 662-667. [all data]

Simirsky, Kabo, et al., 1987
Simirsky, V.V.; Kabo, G.J.; Frenkel, M.L., Additivity of the enthalpies of formation of urea derivatives in the crystalline state, J. Chem. Thermodyn., 1987, 19, 1121-1127. [all data]

Simirskii, Kabo, et al., 1986
Simirskii, V.V.; Kabo, G.Ya.; Frenkel, M.L., Enthalpies of combustion and of formation of monoalkyl derivatives of urea, Russ. J. Phys. Chem. (Engl. Transl.), 1986, 60, 1233-1234. [all data]

Piacente, Ferro, et al., 1990
Piacente, V.; Ferro, D.; Gatta, G. Della, Sublimation enthalpy of eleven alkyl derivatives of urea, Thermochimica Acta, 1990, 158, 1, 79-85, https://doi.org/10.1016/0040-6031(90)80054-3 . [all data]

Della Gatta and Ferro, 1987
Della Gatta, G.; Ferro, D., Enthalpies of fusion and solid-to-solid transition, entropies of fusion for urea and twelve alkylureas, Thermochim. Acta, 1987, 122, 143-152. [all data]

Kabo, Miroshnichenko, et al., 1990, 3
Kabo, G.Y.; Miroshnichenko, E.A.; Frenkel, M.L.; Koxyro, A.A.; Simirskii, V.V.; Krasulin, A.P.; Vorob'eva, V.P.; Lebedev, Y.A., Bull. Acad. Sci. USSR, Div. Chem. Sci., 1990, 662. [all data]


Notes

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