Imidodicarbonic diamide

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, 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
Δfgas-104.4 ± 0.67kcal/molCcbKozyro, Frenkel, et al., 1988 

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
Δfsolid-134.72 ± 0.51kcal/molCcbKozyro, Frenkel, et al., 1988ALS
Quantity Value Units Method Reference Comment
Δcsolid-224.18 ± 0.50kcal/molCcbKozyro, Frenkel, et al., 1988ALS
Quantity Value Units Method Reference Comment
solid,1 bar34.92cal/mol*KN/ALuff and Reed, 1982DH
solid,1 bar34.92cal/mol*KN/AKozyro, Frenkel', et al., 1988DH

Constant pressure heat capacity of solid

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
31.38298.15Kozyro, Frenkel', et al., 1988T = 240 to 450 K.; DH
31.38298.15Luff and Reed, 1982T = 5 to 320 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:
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
Δsub30.28 ± 0.45kcal/molVKozyro, Frenkel, et al., 1988ALS

Enthalpy of phase transition

ΔHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.232372.crystaline, IIcrystaline, IKozyro, Frenkel', et al., 1988DH

Entropy of phase transition

ΔStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
0.607372.crystaline, IIcrystaline, IKozyro, Frenkel', et al., 1988DH

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.

Kozyro, Frenkel, et al., 1988
Kozyro, A.A.; Frenkel, M.L.; Krasulin, A.P.; Simirskii, V.V.; Kabo, G.Ya., Thermodynamic properties of biuret in different states of aggregation, Russ. J. Phys. Chem. (Engl. Transl.), 1988, 62, 897-899. [all data]

Luff and Reed, 1982
Luff, B.B.; Reed, R.B., Low-temperature heat capacity and entropy of oxalic acid and of biuret, J. Chem. Eng. Data, 1982, 27, 290-292. [all data]

Kozyro, Frenkel', et al., 1988
Kozyro, A.A.; Frenkel', M.L.; Krasulin, A.P.; Simirskii, V.V.; Kabo, G.Ya., Thermodynamic properties of biuret in different states of aggregation, Zhur. Fiz. Khim., 1988, 62, 1752-1756. [all data]


Notes

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