Benzene, 1,2,4-trichloro-

• Formula: C₆H₃Cl₃
• Molecular weight: 181.447
• IUPAC Standard InChI: InChI=1S/C6H3Cl3/c7-4-1-2-5(8)6(9)3-4/h1-3H Copy

  
• IUPAC Standard InChIKey: PBKONEOXTCPAFI-UHFFFAOYSA-N Copy
• CAS Registry Number: 120-82-1
• 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: Hostetex L-PEC; 1,2,4-Trichlorobenzene; 1,2,4-Trichlorobenzol; unsym-Trichlorobenzene; Trojchlorobenzen; 1,2,5-Trichlorobenzene; 1,3,4-Trichlorobenzene; Hipochem GM; NSC 406697
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Henry's Law data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
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  • Gas Phase Kinetics Database
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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

Constant pressure heat capacity of liquid

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:
BS - Robert L. Brown and Stephen E. Stein
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

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Enthalpy of sublimation

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

C₆H₂Cl₃^- +  =

By formula: C₆H₂Cl₃^- + H⁺ = C₆H₃Cl₃

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

De-protonation reactions

C₆H₂Cl₃^- +  =

By formula: C₆H₂Cl₃^- + H⁺ = C₆H₃Cl₃

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.

Yan, Gu, et al., 1987
Yan, H.; Gu, J.; An, X.; Hu, R., Standard enthalpies of formation and enthlpies of isomerization of trichlorobenzenes, Huaxue Xuebao, 1987, 45, 1184-1187. [all data]

Platonov and Simulin, 1985
Platonov, V.A.; Simulin, Yu.N., Determination of the standard enthalpies of formation of polychlorobenzenes. III. The standard enthalpies of formation of mono-1,2,4- and 1,3,5-tri-, and 1,2,3,4- and 1,2,3,5-tetrachlorobenzenes, Russ. J. Phys. Chem. (Engl. Transl.), 1985, 59, 179-181. [all data]

Wilhelm, Lainez, et al., 1986
Wilhelm, E.; Lainez, A.; Roux, A.H.; Grolier, J.-P.E., Excess-molar volumes and heat capacities of (1,2,4-trichlorobenzene + an n-alkane) and (1-chloronaphthalene + an n-alkane), Thermochim. Acta, 1986, 105, 101-110. [all data]

Wilhelm, Inglese, et al., 1982
Wilhelm, E.; Inglese, A.; Quint, J.R.; Grolier, J.-P.E., Molar excess volumes and excess heat capacities of (1,2,4-trichlorobenzene + an alkane), J. Chem. Thermodynam., 1982, 14, 303-308. [all data]

Petit and TerMinassian, 1974
Petit, J.C.; TerMinassian, L., Measurements of (dV/dT)p, (dV/dP)T, and (dH/dT)p by flux calorimetry, J. Chem. Thermodynam., 1974, 6, 1139-1152. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Dreisbach, 1955
Dreisbach, R.R., Physical Properties of Chemical Compounds, Advances in Chemistry Series No. 15, Am. Chem. Soc.: Washington, D. C., 1955. [all data]

Galat, 1952
Galat, A., The Preparation of 2,3,5-Trichlorophenoxyacetic acid (2,4,5-T), J. Am. Chem. Soc., 1952, 74, 3890-1. [all data]

van de Lande, 1932
van de Lande, L.M.F., The Action of Sodium Methylate on SOme Derivatives of m-Dichlorobenzene, Recl. Trav. Chim. Pays-Bas, 1932, 51, 98-113. [all data]

Spieksma, Luijk, et al., 1994
Spieksma, Walter; Luijk, Ronald; Govers, Harrie A.J., Determination of the liquid vapour pressure of low-volatility compounds from the Kováts retention index, Journal of Chromatography A, 1994, 672, 1-2, 141-148, https://doi.org/10.1016/0021-9673(94)80602-0 . [all data]

Yan, Gu, et al., 1987, 2
Yan, H.; Gu, J.; An, X.; Hu, R.-H., Huaxue Xuebao, 1987, 45, 1184. [all data]

Rohác, Ruzicka, et al., 1999
Rohác, Vladislav; Ruzicka, Vlastimil; Ruzicka, Kvetoslav; Polednicek, Milos; Aim, Karel; Jose, Jacques; Zábranský, Milan, Recommended vapour and sublimation pressures and related thermal data for chlorobenzenes, Fluid Phase Equilibria, 1999, 157, 1, 121-142, https://doi.org/10.1016/S0378-3812(99)00003-5 . [all data]

Rohác, Ruzicka, et al., 1998
Rohác, Vladislav; Ruzicka, Vlastimil; Ruzicka, Kvetoslav; Aim, Karel, Measurements of Saturated Vapor Pressure above the Liquid Phase for Isomeric Dichlorobenzenes and 1,2,4-Trichlorobenzene, J. Chem. Eng. Data, 1998, 43, 5, 770-775, https://doi.org/10.1021/je9701442 . [all data]

Sears and Hopke, 1949
Sears, G.W.; Hopke, E.R., Vapor Pressures of the Isomeric Trichlorobenzenes in the Low Pressure Region, J. Am. Chem. Soc., 1949, 71, 7, 2575-2576, https://doi.org/10.1021/ja01175a094 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [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]

Schlosser, Marzi, et al., 2001
Schlosser, M.; Marzi, E.; Cottet, F.; Buker, H.H.; Nibbering, N.M.M., The acidity of chloro-substituted benzenes: A comparison of gas phase, ab initio, and kinetic data, Chem. Eur. J., 2001, 7, 16, 3511-3516, https://doi.org/10.1002/1521-3765(20010817)7:16<3511::AID-CHEM3511>3.0.CO;2-U . [all data]

Ruscic, Klasinc, et al., 1981
Ruscic, B.; Klasinc, L.; Wolf, A.; Knop, J.V., Photoelectron spectra of and Ab initio calculations on chlorobenzenes. 2. Trichlorobenzenes, tetrachlorobenzenes, and pentachlorobenzene, J. Phys. Chem., 1981, 85, 1490. [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation
  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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