Trinitrotoluene
- Formula: C7H5N3O6
- Molecular weight: 227.1311
- IUPAC Standard InChIKey: SPSSULHKWOKEEL-UHFFFAOYSA-N
- CAS Registry Number: 118-96-7
- 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: Benzene, 2-methyl-1,3,5-trinitro-; Toluene, 2,4,6-trinitro-; α-TNT; s-Trinitrotoluene; s-Trinitrotoluol; Tolite; Tritol; Trotyl; TNT; 2-Methyl-1,3,5-Trinitrobenzene; 2,4,6-Trinitrotoluene; sym-Trinitrotoluene; sym-Trinitrotoluol; NCI-C56155; TNT-tolite; Trojnitrotoluen; 2,4,6-Trinitrotolueen; 2,4,6-Trinitrotoluol; Tolit; Trotyl oil; 1-Methyl-2,4,6-trinitrobenzene; 2,4,6-TNT; Gradetol; NSC 36949; Tritol (explosive)
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics 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 |
---|---|---|---|---|---|
ΔfH°solid | -15.1 ± 1.2 | kcal/mol | Ccb | Rouse, 1976 | ALS |
ΔfH°solid | -19.25 ± 0.74 | kcal/mol | Ccb | Lenchitz, Velicky, et al., 1971 | ALS |
ΔfH°solid | -11.94 | kcal/mol | Ccb | Rinkenbach, 1930 | Author hf298_condensed[kcal/mol]=-16.50; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -815. ± 6. | kcal/mol | AVG | N/A | Average of 8 values; Individual data points |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
58.15 | 298. | Yin, Ziru, et al., 1991 | T = 290 to 345 K. Cp value reported at 298 K is 1.071 J/g*K.; DH |
74.50 | 293. | Taylor and Rinkenbach, 1924 | T = 90 to 352 K.; 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:
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 355.1 | K | N/A | Hu, Li, et al., 1990 | Uncertainty assigned by TRC = 0.1 K; TRC |
Tfus | 352. | K | N/A | Hwang, Tamura, et al., 1990 | Uncertainty assigned by TRC = 0.1 K; TRC |
Tfus | 354. | K | N/A | Kotula and Rabczuk, 1985 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 354.3 | K | N/A | Lenchitz and Velicky, 1970 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 353.42 | K | N/A | Taylor and Rinkenbach, 1924, 2 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 20.8 ± 0.45 | kcal/mol | ME | Cundall, Frank Palmer, et al., 1978 | AC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 27.06 ± 0.36 | kcal/mol | ME | Kudchadker, Kudchadker, et al., 1979 | Based on data from 301. to 349. K.; AC |
ΔsubH° | 25.0 ± 0.4 | kcal/mol | V | Lenchitz, Velicky, et al., 1971 | ALS |
ΔsubH° | 25.00 ± 0.41 | kcal/mol | ME | Lenchitz, Velicky, et al., 1971 | AC |
ΔsubH° | 28.3 | kcal/mol | V | Edwards, 1950 | ALS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
22.4 | 368. | A | Stephenson and Malanowski, 1987 | Based on data from 353. to 523. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
503. to 523. | 5.3671 | 3209.208 | -24.437 | Maksimov, 1968 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
26.86 | 308. | A | Stephenson and Malanowski, 1987 | Based on data from 293. to 353. K.; AC |
23.7 ± 0.5 | 297. to 330. | GS | Pella, 1976 | See also Pella, 1977.; AC |
24.69 ± 0.60 | 338. | N/A | Lenchitz and Velicky, 1970 | Based on data from 327. to 349. K.; AC |
28.3 ± 1.0 | 323. to 353. | ME | Edwards, 1950 | See also Jones, 1960 and Cox and Pilcher, 1970.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
5.600 | 352.2 | Acree, 1993 | 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: John E. Bartmess
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
C7H4N3O6- + =
By formula: C7H4N3O6- + H+ = C7H5N3O6
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 315.6 ± 2.2 | kcal/mol | G+TS | Koppel, Taft, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 309.0 ± 2.0 | kcal/mol | IMRE | Koppel, Taft, et al., 1994 | gas phase |
ΔrG° | 323.0 ± 5.0 | kcal/mol | IMRB | Dzidic, Carroll, et al., 1974 | gas phase |
Gas phase ion energetics 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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.59 ± 0.04 | PI | Potapov, Kardash, et al., 1972 | LLK |
De-protonation reactions
C7H4N3O6- + =
By formula: C7H4N3O6- + H+ = C7H5N3O6
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 315.6 ± 2.2 | kcal/mol | G+TS | Koppel, Taft, et al., 1994 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 309.0 ± 2.0 | kcal/mol | IMRE | Koppel, Taft, et al., 1994 | gas phase; B |
ΔrG° | 323.0 ± 5.0 | kcal/mol | IMRB | Dzidic, Carroll, et al., 1974 | gas phase; B |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Rouse, 1976
Rouse, P.E., Jr.,
Enthalpies of formation and calculated detonation properties of some thermally stable explosives,
J. Chem. Eng. Data, 1976, 21, 16-20. [all data]
Lenchitz, Velicky, et al., 1971
Lenchitz, C.; Velicky, R.W.; Silvestro, G.; Schlosberg, L.P.,
Thermodynamic properties of several nitrotoluenes,
J. Chem. Thermodyn., 1971, 3, 689-692. [all data]
Rinkenbach, 1930
Rinkenbach, W.H.,
The heats of combustion and formation of aromatic nitro compounds,
J. Am. Chem. Soc., 1930, 52, 115-120. [all data]
Yin, Ziru, et al., 1991
Yin, C.; Ziru, L.; Ganghe, W.; Chengyun, W., et al.,
Determination of heat capacity of explosives and related materials by DSC,
Proc. Int. Pyrotech. Semin. 17th(Vol. 1), 1991, 515-521. [all data]
Taylor and Rinkenbach, 1924
Taylor, C.A.; Rinkenbach, W.H.,
The specific heats of trinitrotoluene, tetryl, picric acid and their molecular complexes,
J. Am. Chem. Soc., 1924, 46, 1504-1510. [all data]
Hu, Li, et al., 1990
Hu, R.; Li, J.; Liang, Y.; Wu, S.; Sun, L.; Wang, Y.,
Thermal behavior of 2,2,2-trinitroethyl-4,4,4-trinitrobutyrate,
J. Therm. Anal., 1990, 36, 1155-60. [all data]
Hwang, Tamura, et al., 1990
Hwang, D.-R.; Tamura, M.; Yoshida, T.; Tanaka, N.; Hosoya, F.,
Estimation of ΔH°f of nitro derivatives of benzene and toluene using AM1 and DSC,
J. Energ. Mater., 1990, 8, 85-98. [all data]
Kotula and Rabczuk, 1985
Kotula, I.; Rabczuk, A.,
DTA Investigation of the Solid-Liquid Equilibrium for Mehtyl Derivatives of Naphthalene with Some Nitroaromatics,
J. Therm. Anal., 1985, 30, 195. [all data]
Lenchitz and Velicky, 1970
Lenchitz, Charles; Velicky, Rodolf W.,
Vapor pressure and heat of sublimation of three nitrotoluenes,
J. Chem. Eng. Data, 1970, 15, 3, 401-403, https://doi.org/10.1021/je60046a022
. [all data]
Taylor and Rinkenbach, 1924, 2
Taylor, C.A.; Rinkenbach, W.H.,
The specific heats of trinitrotoluene, tetryl, picric acid, and their molecular complexes,
J. Am. Chem. Soc., 1924, 46, 1504-10. [all data]
Cundall, Frank Palmer, et al., 1978
Cundall, Robert B.; Frank Palmer, T.; Wood, Colin E.C.,
Vapour pressure measurements on some organic high explosives,
J. Chem. Soc., Faraday Trans. 1, 1978, 74, 0, 1339, https://doi.org/10.1039/f19787401339
. [all data]
Kudchadker, Kudchadker, et al., 1979
Kudchadker, Shanti A.; Kudchadker, Arvind P.; Zwolinski, Bruno J.,
Chemical thermodynamic properties of anthracene and phenanthrene,
The Journal of Chemical Thermodynamics, 1979, 11, 11, 1051-1059, https://doi.org/10.1016/0021-9614(79)90135-6
. [all data]
Edwards, 1950
Edwards, G.,
The vapour pressure of 2 : 4 : 6-trinitrotoluene,
Trans. Faraday Soc., 1950, 46, 423. [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]
Maksimov, 1968
Maksimov, Yu,
Steam Pressures of Nitroaromatic Compouds at Different Temperatures,
Zh. Fiz. Khim., 1968, 42, 2921-2925. [all data]
Pella, 1976
Pella, Peter A.,
Generator for producing trace vapor concentrations of 2,4,6-trinitrotoluene, 2,4-dinitrotoluene, and ethylene glycol dinitrate for calibrating explosives vapor detectors,
Anal. Chem., 1976, 48, 11, 1632-1637, https://doi.org/10.1021/ac50005a054
. [all data]
Pella, 1977
Pella, Peter A.,
Measurement of the vapor pressures of tnt, 2,4-dnt, 2,6-dnt, and egdn,
The Journal of Chemical Thermodynamics, 1977, 9, 4, 301-305, https://doi.org/10.1016/0021-9614(77)90049-0
. [all data]
Jones, 1960
Jones, A.H.,
Sublimation Pressure Data for Organic Compounds.,
J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019
. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]
Acree, 1993
Acree, William E.,
Thermodynamic properties of organic compounds,
Thermochimica Acta, 1993, 219, 97-104, https://doi.org/10.1016/0040-6031(93)80486-T
. [all data]
Koppel, Taft, et al., 1994
Koppel, I.A.; Taft, R.W.; Anvia, F.; Zhu, S.Z.; Hu, L.Q.; Sung, K.S.; Desmarteau, D.D.; Yagupolskii, L.M.,
The Gas-Phase Acidities of Very Strong Neutral Bronsted Acids,
J. Am. Chem. Soc., 1994, 116, 7, 3047, https://doi.org/10.1021/ja00086a038
. [all data]
Dzidic, Carroll, et al., 1974
Dzidic, I.; Carroll, D.I.; Stillwell, R.N.; Horning, E.C.,
Gas phase reactions. Ionization by proton transfer to superoxide anions,
J. Am. Chem. Soc., 1974, 96, 5258. [all data]
Potapov, Kardash, et al., 1972
Potapov, V.K.; Kardash, I.E.; Sorokin, V.V.; Sokolov, S.A.; Evlasheva, T.I.,
Photoionization of heteroaromatic compounds,
Khim. Vys. Energ., 1972, 6, 392. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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