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

Formula: C₃H₆N₆
Molecular weight: 126.1199
IUPAC Standard InChI: InChI=1S/C3H6N6/c4-1-7-2(5)9-3(6)8-1/h(H6,4,5,6,7,8,9)
IUPAC Standard InChIKey: JDSHMPZPIAZGSV-UHFFFAOYSA-N
CAS Registry Number: 108-78-1
Chemical structure:
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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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NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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Condensed phase thermochemistry data

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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
Δ_fH°_solid	-66.1 ± 3.3	kJ/mol	Ccb	Selivanov, Karlik, et al., 1973	Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -64.22 kJ/mol; ALS
Δ_fH°_solid	-86.86	kJ/mol	Ccb	Baroody and Carpenter, 1972	ALS
Δ_fH°_solid	-71.7 ± 2.0	kJ/mol	Ccb	Tavernier and Lamouroux, 1956	Reanalyzed by Cox and Pilcher, 1970, Original value = -68.78 kJ/mol; Author's hf298_condensed=-17.976 kcal/mol; ALS
Δ_fH°_solid	-71.67	kJ/mol	Ccb	Salley and Gray, 1951	correction of Salley and Gray, 1948; ALS
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_solid	-1972. ± 3.	kJ/mol	Ccb	Selivanov, Karlik, et al., 1973	ALS
Δ_cH°_solid	-2008.94	kJ/mol	Ccb	Handrick, 1956	ALS
Δ_cH°_solid	-1966.4 ± 2.0	kJ/mol	Ccb	Tavernier and Lamouroux, 1956	Reanalyzed by Cox and Pilcher, 1970, Original value = -1969.26 kJ/mol; Author's hf298_condensed=-17.976 kcal/mol; ALS
Δ_cH°_solid	-1966.4	kJ/mol	Ccb	Salley and Gray, 1951	correction of Salley and Gray, 1948; ALS
Quantity	Value	Units	Method	Reference	Comment
S°_{solid,1 bar}	149.08	J/mol*K	N/A	Stephenson and Berets, 1952	DH

Constant pressure heat capacity of solid

C_p,solid (J/mol*K)	Temperature (K)	Reference	Comment
156.11	299.95	Stephenson and Berets, 1952	T = 15 to 300 K. Value is unsmoothed experimental datum.; DH

References

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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]

Notes

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Symbols used in this document:

C_p,solid	Constant pressure heat capacity of solid
S°_{solid,1 bar}	Entropy of solid at standard conditions (1 bar)
Δ_cH°_solid	Enthalpy of combustion of solid at standard conditions
Δ_fH°_solid	Enthalpy of formation of solid at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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