Acetyl chloride
- Formula: C2H3ClO
- Molecular weight: 78.498
- IUPAC Standard InChIKey: WETWJCDKMRHUPV-UHFFFAOYSA-N
- CAS Registry Number: 75-36-5
- 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: Ethanoyl chloride; Acetic chloride; CH3COCl; Acetic acid chloride; Rcra waste number U006; UN 1717; Acetic acid monochloride; UN1717 (DOT)
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Gas phase thermochemistry data
Go To: Top, Phase change 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -251.3 ± 0.50 | kJ/mol | Cm | Devore and O'Neal, 1969 | Heat of hydrolysis |
ΔfH°gas | -244. ± 0.8 | kJ/mol | Cm | Pritchard and Skinner, 1950 | Reanalyzed by Cox and Pilcher, 1970, Original value = -249. kJ/mol; Heat of hydrolysis at 298 K, see Carson and Skinner, 1949 |
ΔfH°gas | -246.6 | kJ/mol | Cm | Carson and Skinner, 1949 |
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
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 |
---|---|---|---|---|---|
Tboil | 325. ± 2. | K | AVG | N/A | Average of 10 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 160.29 | K | N/A | McDonald, Shrader, et al., 1959 | Uncertainty assigned by TRC = 0.07 K; TRC |
Tfus | 161.2 | K | N/A | Timmermans and Mattaar, 1921 | Uncertainty assigned by TRC = 0.6 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 23.8 ± 0.2 | kJ/mol | V | Devore and O'Neal, 1969 | Heat of hydrolysis; ALS |
ΔvapH° | 28.6 | kJ/mol | V | Carson and Skinner, 1949 | ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
24.5 | 288. | A | Stephenson and Malanowski, 1987 | Based on data from 273. to 323. K.; AC |
31.5 | 282. | A | Stephenson and Malanowski, 1987 | Based on data from 267. to 324. K. See also McDonald, Shrader, et al., 1959, 2 and Dykyj, 1970.; AC |
30.1 ± 0.42 | 323.9 | V | Mathews and Fehlandt, 1931 | Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 28.6 kJ/mol; ALS |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference |
---|---|---|---|---|
266.86 to 324.20 | 3.96568 | 1062.86 | -55.531 | McDonald, Shrader, et al., 1959, 2 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.82 ± 0.04 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.78 | PI | Traeger, McLouglin, et al., 1982 | LBLHLM |
10.85 ± 0.05 | PE | Chadwick and Katrib, 1974 | LLK |
11.05 | CI | Cermak, 1968 | RDSH |
11.08 ± 0.06 | EI | Foffani, Pignataro, et al., 1964 | RDSH |
11.02 ± 0.05 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
11.03 | PE | Kimura, Katsumata, et al., 1975 | Vertical value; LLK |
11.03 | PE | Katsumata and Kimura, 1975 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H3O+ | 10.78 | Cl | PI | Traeger, McLouglin, et al., 1982 | LBLHLM |
C2H3O+ | 11.25 | Cl | EI | Haney and Franklin, 1969 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Phase change 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.
Devore and O'Neal, 1969
Devore, J.A.; O'Neal, H.E.,
Heats of formation of the acetyl halides and of the acetyl radical,
J. Phys. Chem., 1969, 73, 2644-2648. [all data]
Pritchard and Skinner, 1950
Pritchard, H.O.; Skinner, H.A.,
The heats of hydrolysis of the chloro-substituted acetyl chlorides,
J. Chem. Soc., 1950, 272-276. [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]
Carson and Skinner, 1949
Carson, A.S.; Skinner, H.A.,
201. Carbon-halogen bond energies in the acetyl halides,
J. Chem. Soc., 1949, 936-939. [all data]
McDonald, Shrader, et al., 1959
McDonald, R.A.; Shrader, S.A.; Stull, D.R.,
Vapor Pressures and Freezing Points of 30 Organics,
J. Chem. Eng. Data, 1959, 4, 311. [all data]
Timmermans and Mattaar, 1921
Timmermans, J.; Mattaar, J.F.,
Freezing points of orgainic substances VI. New experimental determinations.,
Bull. Soc. Chim. Belg., 1921, 30, 213. [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]
McDonald, Shrader, et al., 1959, 2
McDonald, R.A.; Shrader, S.A.; Stull, D.R.,
Vapor Pressures and Freezing Points of Thirty Pure Organic Compounds.,
J. Chem. Eng. Data, 1959, 4, 4, 311-313, https://doi.org/10.1021/je60004a009
. [all data]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Mathews and Fehlandt, 1931
Mathews, J.H.; Fehlandt, P.R.,
The heats of vaporization of some organic compounds,
J. Am. Chem. Soc., 1931, 53, 3212-32. [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]
Traeger, McLouglin, et al., 1982
Traeger, J.C.; McLouglin, R.G.; Nicholson, A.J.C.,
Heat of formation for acetyl cation in the gas phase,
J. Am. Chem. Soc., 1982, 104, 5318. [all data]
Chadwick and Katrib, 1974
Chadwick, D.; Katrib, A.,
Photoelectron spectra of acetaldehyde and acetyl halides,
J. Electron Spectrosc. Relat. Phenom., 1974, 3, 39. [all data]
Cermak, 1968
Cermak, V.,
Penning ionization electron spectroscopy. I. Determination of ionization potentials of polyatomic molecules,
Collection Czech. Chem. Commun., 1968, 33, 2739. [all data]
Foffani, Pignataro, et al., 1964
Foffani, A.; Pignataro, S.; Cantone, B.; Grasso, F.,
Ionization potentials and substituent effects for aromatic carbonyl compounds,
Z. Physik. Chem. (Frankfurt), 1964, 42, 221. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Kimura, Katsumata, et al., 1975
Kimura, K.; Katsumata, S.; Yamazaki, T.; Wakabayashi, H.,
UV photoelectron spectra and sum rule consideration; out-of-plane orbitals of unsaturated compounds with planar-skeleton structure,
J. Electron Spectrosc. Relat. Phenom., 1975, 6, 41. [all data]
Katsumata and Kimura, 1975
Katsumata, S.; Kimura, K.,
Photoelectron spectra and sum rule consideration. Effect of chlorine substitution on ionization energies for chloroethanes, chloroacetaldehydes and chloroacetyl chlorides,
J. Electron Spectrosc. Relat. Phenom., 1975, 6, 309. [all data]
Haney and Franklin, 1969
Haney, M.A.; Franklin, J.L.,
Excess energies in mass spectra of some oxygen-containing organic compounds,
J. Chem. Soc. Faraday Trans., 1969, 65, 1794. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy Tboil Boiling point Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas 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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