Benzene, (trichloromethyl)-
- Formula: C7H5Cl3
- Molecular weight: 195.474
- IUPAC Standard InChIKey: XEMRAKSQROQPBR-UHFFFAOYSA-N
- CAS Registry Number: 98-07-7
- 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. - Species with the same structure:
- Other names: Toluene, α,α,α-trichloro-; Trichlorotoluene; (Trichloromethyl)benzene; Benzenyl trichloride; Benzotrichloride; Benzyl trichloride; Benzylidyne chloride; Phenylchloroform; Phenyltrichloromethane; Toluene trichloride; Trichlorophenylmethane; 1-(Trichloromethyl)benzene; Benzenyl chloride; α,α,α-Trichlorotoluene; ω,ω,ω-Trichlorotoluene; Chlorure de benzenyle; Trichloormethylbenzeen; Trichlormethylbenzol; Triclorometilbenzene; Benzoic trichloride; Rcra waste number U023; UN 2226; α,α,α-Trichloromethylbenzene; NSC 14663
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Phase change data
Go To: Top, Reaction thermochemistry 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:
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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 493.8 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 235.99 | K | N/A | Goates, Boerio-Goates, et al., 1987 | Uncertainty assigned by TRC = 0.1 K; TRC |
Tfus | 256.2 | K | N/A | Altschul and Von Schneider, 1895 | Uncertainty assigned by TRC = 0.6 K; TRC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.4 | 333. | A | Stephenson and Malanowski, 1987 | Based on data from 318. to 487. K. See also Stull, 1947.; 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 |
---|---|---|---|---|---|
318.9 to 486.7 | 4.82356 | 2166.28 | -37.699 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
3.334 | 236. | N/A | Domalski and Hearing, 1996 | AC |
2.53 | 270. | DSC | Ahmed and Eades, 1972 | There is a large discrepancy in the two melting points. The 270 K value is correct; AC |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
3.3341 | 235.99 | crystaline, I | liquid | Goates, Boerio-Goates, et al., 1987, 2 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
14.13 | 235.99 | crystaline, I | liquid | Goates, Boerio-Goates, et al., 1987, 2 | DH |
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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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: Br- + C7H5Cl3 = (Br- • C7H5Cl3)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.4 ± 1.8 | kcal/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff measured at 303 K, corrected to 423 K, ΔSaff taken as that of PhNO2..Br-; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 20. | cal/mol*K | N/A | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 3.9 ± 1.0 | kcal/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff measured at 303 K, corrected to 423 K, ΔSaff taken as that of PhNO2..Br-; B |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
3.9 | 423. | PHPMS | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
References
Go To: Top, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Goates, Boerio-Goates, et al., 1987
Goates, J.R.; Boerio-Goates, J.; Goates, S.R.; Ott, J.B.,
(Solid + Liquid) Phase Equilibria for (N,N-Dimethylacetamide + Tetra- chloromethane): Enthalpies of Meltingof Pure Compounds and Enthalpies for Formation of Moelcular Addition Compounds from Phase Eq,
J. Chem. Thermodyn., 1987, 19, 103. [all data]
Altschul and Von Schneider, 1895
Altschul, M.; Von Schneider, B.,
Freezing points of some organic fluids,
Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1895, 16, 24. [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]
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]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Ahmed and Eades, 1972
Ahmed, A.M.I.; Eades, R.G.,
Proton magnetic relaxation in toluene and some derivatives,
J. Chem. Soc., Faraday Trans. 2, 1972, 68, 1623, https://doi.org/10.1039/f29726801623
. [all data]
Goates, Boerio-Goates, et al., 1987, 2
Goates, J.R.; Boerio-Goates, J.; Goates, S.R.; Ott, J.B.,
(Solid + liquid) phase equilibria for (N,N-dimethylacetamide + tetrachloromethane): enthalpies of melting of pure components and enthalpies for formation of molecular addition compounds from phase equilibria,
J. Chem. Thermodynam., 1987, 19, 103-107. [all data]
Paul and Kebarle, 1991
Paul, G.J.C.; Kebarle, P.,
Stabilities of Complexes of Br- with Substituted Benzenes (SB) Based on Determinations of the Gas-Phase Equilibria Br- + SB = (BrSB)-,
J. Am. Chem. Soc., 1991, 113, 4, 1148, https://doi.org/10.1021/ja00004a014
. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
T Temperature Tboil Boiling point Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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