Acetyl bromide
- Formula: C2H3BrO
- Molecular weight: 122.949
- IUPAC Standard InChIKey: FXXACINHVKSMDR-UHFFFAOYSA-N
- CAS Registry Number: 506-96-7
- 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: CH3COBr; UN 1716
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -196. ± 3. | kJ/mol | Cm | Devore and O'Neal, 1969 | Heat of hydrolysis |
ΔfH°gas | -195. | kJ/mol | Cm | Carson and Skinner, 1949 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -223.3 ± 0.63 | kJ/mol | Cm | Devore and O'Neal, 1969 | Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -225.6 ± 0.3 kJ/mol; Heat of hydrolysis |
ΔfH°liquid | -226. ± 0.54 | kJ/mol | Cm | Carson and Skinner, 1949 |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, 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
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 | 349.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 349. | K | N/A | Yamase, 1961 | Uncertainty assigned by TRC = 3. K; TRC |
Tboil | 353.65 | K | N/A | Slanina and Hennion, 1937 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tboil | 349.07 | K | N/A | Mathews and Fehlandt, 1931 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tboil | 349.85 | K | N/A | Timmermans and Mattaar, 1921 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 177. | K | N/A | Buckingham and Donaghy, 1982 | BS |
Tfus | 176.65 | K | N/A | Timmermans and Mattaar, 1921 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 29.6 ± 0.3 | kJ/mol | V | Devore and O'Neal, 1969 | Heat of hydrolysis; ALS |
ΔvapH° | 31. | kJ/mol | V | Carson and Skinner, 1949 | ALS |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
344. | 1.00 | Buckingham and Donaghy, 1982 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
29.5 | 304. | A | Stephenson and Malanowski, 1987 | Based on data from 289. to 334. K.; AC |
31.4 | 290. | N/A | Devore and O'Neal, 1969 | Based on data from 275. to 333. K.; AC |
30.3 | 348.1 | V | Mathews and Fehlandt, 1931, 2 | ALS |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
275.6 to 333.7 | 2.63448 | 670.92 | -102.24 | Devore and O'Neal, 1969 | Coefficents calculated by NIST from author's data. |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed 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 compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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: C2H3BrO + H2O = HBr + C2H4O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -97.53 | kJ/mol | Cm | Devore and O'Neal, 1969 | liquid phase; Heat of hydrolysis |
ΔrH° | -96.48 | kJ/mol | Cm | Carson and Skinner, 1949 | liquid phase |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, 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.
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]
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]
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]
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]
Yamase, 1961
Yamase, Y.,
Friedel-Crafts Acylation II. Relative Reactivity for Some Acyl Halides,
Bull. Chem. Soc. Jpn., 1961, 34, 480-84. [all data]
Slanina and Hennion, 1937
Slanina, S.J.; Hennion, G.F.,
Reactions of Alkenyl Esters Derived from Alkylacetylenes,
J. Am. Chem. Soc., 1937, 59, 855. [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. [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]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [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]
Mathews and Fehlandt, 1931, 2
Mathews, J.H.; Fehlandt, P.R.,
The heats of vaporization of some organic compounds,
J. Am. Chem. Soc., 1931, 53, 3212-32. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.