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1,3,5-Triazine-2,4,6-triamine

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Condensed 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
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafsolid-15.80 ± 0.80kcal/molCcbSelivanov, Karlik, et al., 1973Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -15.35 kcal/mol; ALS
Deltafsolid-20.76kcal/molCcbBaroody and Carpenter, 1972ALS
Deltafsolid-17.13 ± 0.47kcal/molCcbTavernier and Lamouroux, 1956Reanalyzed by Cox and Pilcher, 1970, Original value = -16.44 kcal/mol; Author's hf298_condensed=-17.976 kcal/mol; ALS
Deltafsolid-17.13kcal/molCcbSalley and Gray, 1951correction of Salley and Gray, 1948; ALS
Quantity Value Units Method Reference Comment
Deltacsolid-471.3 ± 0.8kcal/molCcbSelivanov, Karlik, et al., 1973ALS
Deltacsolid-480.148kcal/molCcbHandrick, 1956ALS
Deltacsolid-469.97 ± 0.47kcal/molCcbTavernier and Lamouroux, 1956Reanalyzed by Cox and Pilcher, 1970, Original value = -470.664 kcal/mol; Author's hf298_condensed=-17.976 kcal/mol; ALS
Deltacsolid-469.98kcal/molCcbSalley and Gray, 1951correction of Salley and Gray, 1948; ALS
Quantity Value Units Method Reference Comment
solid,1 bar35.631cal/mol*KN/AStephenson and Berets, 1952DH

Constant pressure heat capacity of solid

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
37.311299.95Stephenson and Berets, 1952T = 15 to 300 K. Value is unsmoothed experimental datum.; DH

Phase change data

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), 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
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Deltasub29. ± 1.kcal/molVHirt, Steger, et al., 1960ALS

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
29.47432.AStephenson and Malanowski, 1987Based on data from 417. - 447. K.; AC
29.0 ± 1.0515.GSHirt, Steger, et al., 1960Based on data from 417. - 614. K. See also Cox and Pilcher, 1970, 2.; AC

Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

6Urea = 1,3,5-Triazine-2,4,6-triamine + 3Carbon dioxide + 6Ammonia

By formula: 6CH4N2O = C3H6N6 + 3CO2 + 6H3N

Quantity Value Units Method Reference Comment
Deltar112.2kcal/molEqkRukevich and Zagranichnyi, 1971liquid phase

IR Spectrum

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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: Coblentz Society, Inc.

Spectrum

A digitized version of this spectrum is not currently available.

Additional Data

View scan of original (hardcopy) spectrum.

Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Source reference COBLENTZ NO. 2344
Date Not specified, most likely prior to 1970
Instrument Not specified, most likely a prism, grating, or hybrid spectrometer.
Data processing (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-6826
NIST MS number 228586

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References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Notes

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

Selivanov, Karlik, et al., 1973
Selivanov, V.D.; Karlik, V.M.; Zagranicnyi, V.I., Standard enthalpies of formation ammeline, ammelide, melem, and melon, Russ. J. Phys. Chem. (Engl. Transl.), 1973, 47, 272. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Baroody and Carpenter, 1972
Baroody, E.E.; Carpenter, G.A., Heats of formation of propellant compounds (U), Rpt. Naval Ordnance Systems Command Task No. 331-003/067-1/UR2402-001 for Naval Ordance Station, Indian Head, MD, 1972, 1-9. [all data]

Tavernier and Lamouroux, 1956
Tavernier, P.; Lamouroux, M., Determinations calorimetriques relatives a vingt-six substances organiques, Mem. Poudres, 1956, 38, 65-88. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Salley and Gray, 1951
Salley, D.J.; Gray, J.B., Heats of combustion of some organic nitrogen compounds, J. Am. Chem. Soc., 1951, 73, 5925. [all data]

Salley and Gray, 1948
Salley, D.J.; Gray, J.B., Heats of combustion of some organic nitrogen compounds, J. Am. Chem. Soc., 1948, 70, 2650-2653. [all data]

Handrick, 1956
Handrick, G.R., Report of the study of pure explosive compounds. Part IV. Calculation of heat of combustion of organic compounds from structural features and calculation of power of high explosives, Rpt. C-58247 for the Office of the Chief of Ordnance, contract DA-19-020-ORD-47 by the Arthur D. Little, Inc., Cambridge, MA, 1956, 467-573. [all data]

Stephenson and Berets, 1952
Stephenson, C.C.; Berets, D.J., The heat capacities and entropies of melamine and dicyandiamide, J. Am. Chem. Soc., 1952, 74, 882-883. [all data]

Hirt, Steger, et al., 1960
Hirt, R.C.; Steger, J.E.; Simard, G.L., Vapor pressure of 2,4,6-triamino-s-triazine (melamine), J. Polym. Sci., 1960, 43, 319-323. [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]

Cox and Pilcher, 1970, 2
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Rukevich and Zagranichnyi, 1971
Rukevich, O.S.; Zagranichnyi, V.I., Equilibrium in the reaction of melamine formation from urea, J. Anal. Chem. USSR, 1971, 44, 1616-1620. [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References