Ethyl formate
- Formula: C3H6O2
- Molecular weight: 74.0785
- IUPAC Standard InChIKey: WBJINCZRORDGAQ-UHFFFAOYSA-N
- CAS Registry Number: 109-94-4
- 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. - Isotopologues:
- Other names: Formic acid, ethyl ester; Areginal; Ethyl methanoate; HCOOC2H5; Ethylformic ester; Aethylformiat; Ethyle (formiate d'); Ethylformiaat; Etile (formiato di); Mrowczan etylu; Ethylester kyseliny mravenci; Formic ether; UN 1190; Ethyl ester of formic acid; NSC 406578
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Phase change data
Go To: Top, IR Spectrum, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 327. ± 1. | K | AVG | N/A | Average of 33 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 193.55 | K | N/A | Timmermans, 1952 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 193. | K | N/A | Timmermans, 1935 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 193.75 | K | N/A | Timmermans, 1934 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tfus | 192.65 | K | N/A | Timmermans, 1911 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 508. ± 5. | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 47.38 | bar | N/A | Young, 1910 | Uncertainty assigned by TRC = 1.0132 bar; TRC |
Pc | 47.370 | bar | N/A | Young and Thomas, 1893 | Uncertainty assigned by TRC = 0.40 bar; TRC |
Pc | 49.81 | bar | N/A | Nadezhdin, 1887 | Uncertainty assigned by TRC = 2.0265 bar; TRC |
Pc | 49.30 | bar | N/A | Sajots, 1879 | Uncertainty assigned by TRC = 2.0265 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 4.363 | mol/l | N/A | Young, 1910 | Uncertainty assigned by TRC = 0.07 mol/l; TRC |
ρc | 4.363 | mol/l | N/A | Young and Thomas, 1893 | Uncertainty assigned by TRC = 0.05 mol/l; TRC |
ρc | 4.25 | mol/l | N/A | Nadezhdin, 1887 | Uncertainty assigned by TRC = 0.08 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 32.11 | kJ/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 32.2 | kJ/mol | V | Hine and Klueppet, 1974 | ALS |
ΔvapH° | 32.5 | kJ/mol | N/A | Hine and Klueppet, 1974 | DRB |
ΔvapH° | 30.1 ± 0.01 | kJ/mol | V | Mathews, 1926 | ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
29.91 | 327.5 | N/A | Majer and Svoboda, 1985 | |
31.4 | 313. | N/A | Fárková and Wichterle, 1993 | Based on data from 300. to 326. K.; AC |
29.9 | 342. | A | Stephenson and Malanowski, 1987 | Based on data from 327. to 498. K.; AC |
35.8 | 228. | A | Stephenson and Malanowski, 1987 | Based on data from 213. to 336. K. See also Dykyj, 1970.; AC |
31.6 ± 0.1 | 304. | C | Cihlár, Hynek, et al., 1976 | AC |
30.9 ± 0.1 | 313. | C | Cihlár, Hynek, et al., 1976 | AC |
29.8 ± 0.1 | 328. | C | Cihlár, Hynek, et al., 1976 | AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
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Temperature (K) | A (kJ/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
304. to 343. | 51.07 | 0.3191 | 508.4 | Majer and Svoboda, 1985 |
IR Spectrum
Go To: Top, Phase change data, References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
References
Go To: Top, Phase change data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Timmermans, 1952
Timmermans, J.,
Freezing points of organic compounds. VVI New determinations.,
Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]
Timmermans, 1935
Timmermans, J.,
Researches in Stoichiometry. I. The Heat of Fusion of Organic Compounds.,
Bull. Soc. Chim. Belg., 1935, 44, 17-40. [all data]
Timmermans, 1934
Timmermans, J.,
Theory of Concentrated Solutions XII.,
Bull. Soc. Chim. Belg., 1934, 43, 626. [all data]
Timmermans, 1911
Timmermans, J.,
Researches on the freezing point of organic liquid compounds,
Bull. Soc. Chim. Belg., 1911, 25, 300. [all data]
Young, 1910
Young, S.,
The Internal Heat of Vaporization constants of thirty pure substances,
Sci. Proc. R. Dublin Soc., 1910, 12, 374. [all data]
Young and Thomas, 1893
Young, S.; Thomas, G.L.,
The vapour pressures, molecular volumes, and critical constants of ten of the lower esters,
J. Chem. Soc., 1893, 63, 1191. [all data]
Nadezhdin, 1887
Nadezhdin, A.,
Rep. Phys., 1887, 23, 708. [all data]
Sajots, 1879
Sajots, W.,
Vapor Pressures of Saturated Vapors at High Temperatures.,
Beibl. Ann. Phys., 1879, 3, 741-3. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Hine and Klueppet, 1974
Hine, J.; Klueppet, A.W.,
Structural effects on rates and equilibria. XVIII. Thermodynamic stability of ortho esters,
J. Am. Chem. Soc., 1974, 96, 2924-2929. [all data]
Mathews, 1926
Mathews, J.H.,
The accurate measurement of heats of vaporization of liquids,
J. Am. Chem. Soc., 1926, 48, 562-576. [all data]
Fárková and Wichterle, 1993
Fárková, J.; Wichterle, I.,
Vapour pressures of some ethyl and propyl esters of fatty acids,
Fluid Phase Equilibria, 1993, 90, 1, 143-148, https://doi.org/10.1016/0378-3812(93)85009-B
. [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]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Cihlár, Hynek, et al., 1976
Cihlár, J.; Hynek, V.; Svoboda, V.; Holub, R.,
Heats of vaporization of alkyl esters of formic acid,
Collect. Czech. Chem. Commun., 1976, 41, 1, 1-6, https://doi.org/10.1135/cccc19760001
. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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