isopropylurea

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.


Condensed phase thermochemistry data

Go To: Top, 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid-93.09 ± 0.30kcal/molCcbKabo, Miroshnichenko, et al., 1990see Simirsky, Kabo, et al., 1987 and Simirskii, Kabo, et al., 1986
Quantity Value Units Method Reference Comment
Δcsolid-624.69 ± 0.27kcal/molCcbKabo, Miroshnichenko, et al., 1990see Simirsky, Kabo, et al., 1987 and Simirskii, Kabo, et al., 1986

Phase change data

Go To: Top, 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:
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., 1990, 2Uncertainty assigned by TRC = 0.00001 K; TRC

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
23.1 ± 0.38353.MEZaitsau, Kabo, et al., 2003Based on data from 333. to 372. K.; AC
23.1 ± 0.38350.MEZaitsau, Kabo, et al., 2003Based on data from 333. to 372. K.; AC
23.2 ± 0.1350.CZaitsau, Kabo, et al., 2003AC
23.8 ± 0.33354.CKabo, Miroshnichenko, et al., 1990see 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

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

Entropy of fusion

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

Entropy of fusion

ΔfusS (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

ΔHtrs (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

Go To: Top, 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.

Kabo, Miroshnichenko, et al., 1990
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]

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, 2
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]

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

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