1,3,5-Triazine-2,4,6-triamine
- Formula: C3H6N6
- Molecular weight: 126.1199
- IUPAC Standard InChIKey: JDSHMPZPIAZGSV-UHFFFAOYSA-N
- CAS Registry Number: 108-78-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Melamine; S-Triazinetriamine; Cyanuramide; Cyanurotriamide; Cyanurotriamine; Hicophor PR; Isomelamine; Teoharn; Theoharn; Virset 656-4; 1,3,5-Triazine-2,4,6(1H,3H,5H)-triimine; 2,4,6-Triamino-s-triazine; 2,4,6-Triamino-1,3,5-triazine; 2,4,6-Triaminotriazine; s-Triazine, 2,4,6-triamino-; NCI-C50715; Aero; Cyanuric triamide; Cyanurtriamide; Triaminotriazine; s-Triazine, 4,6-diamino-1,2-dihydro-2-imino-; Pluragard C 133; ADK Stab ZS 27; DG 002; DG 002 (amine); Mark ZS 27; NSC 2130; Pluragard; Spinflam ML 94M; Yukamelamine; ZS 27
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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 |
---|---|---|---|---|---|
ΔfH°solid | -15.80 ± 0.80 | kcal/mol | Ccb | Selivanov, Karlik, et al., 1973 | Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -15.35 kcal/mol; ALS |
ΔfH°solid | -20.76 | kcal/mol | Ccb | Baroody and Carpenter, 1972 | ALS |
ΔfH°solid | -17.13 ± 0.47 | kcal/mol | Ccb | Tavernier and Lamouroux, 1956 | Reanalyzed by Cox and Pilcher, 1970, Original value = -16.44 kcal/mol; Author's hf298_condensed=-17.976 kcal/mol; ALS |
ΔfH°solid | -17.13 | kcal/mol | Ccb | Salley and Gray, 1951 | correction of Salley and Gray, 1948; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -471.3 ± 0.8 | kcal/mol | Ccb | Selivanov, Karlik, et al., 1973 | ALS |
ΔcH°solid | -480.148 | kcal/mol | Ccb | Handrick, 1956 | ALS |
ΔcH°solid | -469.97 ± 0.47 | kcal/mol | Ccb | Tavernier and Lamouroux, 1956 | Reanalyzed by Cox and Pilcher, 1970, Original value = -470.664 kcal/mol; Author's hf298_condensed=-17.976 kcal/mol; ALS |
ΔcH°solid | -469.98 | kcal/mol | Ccb | Salley and Gray, 1951 | correction of Salley and Gray, 1948; ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 35.631 | cal/mol*K | N/A | Stephenson and Berets, 1952 | DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
37.311 | 299.95 | Stephenson and Berets, 1952 | T = 15 to 300 K. Value is unsmoothed experimental datum.; DH |
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:
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 |
---|---|---|---|---|---|
ΔsubH° | 29. ± 1. | kcal/mol | V | Hirt, Steger, et al., 1960 | ALS |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
29.47 | 432. | A | Stephenson and Malanowski, 1987 | Based on data from 417. to 447. K.; AC |
29.0 ± 1.0 | 515. | GS | Hirt, Steger, et al., 1960 | Based on data from 417. to 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
By formula: 6CH4N2O = C3H6N6 + 3CO2 + 6H3N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 112.2 | kcal/mol | Eqk | Rukevich and Zagranichnyi, 1971 | liquid phase |
IR Spectrum
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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: 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) |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), NIST Subscription Links, 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
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- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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