Octadecanoic acid, ethyl ester
- Formula: C20H40O2
- Molecular weight: 312.5304
- IUPAC Standard InChI: InChI=1S/C20H40O2/c1-3-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22-4-2/h3-19H2,1-2H3
- IUPAC Standard InChIKey: MVLVMROFTAUDAG-UHFFFAOYSA-N
- CAS Registry Number: 111-61-5
- 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: Stearic acid, ethyl ester; Ethyl n-octadecanoate; Ethyl octadecanoate; Ethyl stearate; Radia 7185; Ethyl ocatadecanoate; Ethyl octadecanoate (Ethyl stearate)
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- 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.
Phase change data
Go To: Top, 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 |
|---|---|---|---|---|---|
| Tfus | 307.2 | K | N/A | Cheshko and Shvaika, 1971 | Uncertainty assigned by TRC = 2. K; TRC |
| Tfus | 306.9 | K | N/A | Boelhouwer, Nederbragt, et al., 1950 | Uncertainty assigned by TRC = 0.5 K; TRC |
| Tfus | 304.05 | K | N/A | Deffet, 1940 | Metastable crystal phase; Uncertainty assigned by TRC = 0.4 K; TRC |
| Tfus | 306.55 | K | N/A | Deffet, 1940 | Uncertainty assigned by TRC = 0.3 K; TRC |
| Tfus | 304.3 | K | N/A | Baker and Smyth, 1938 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1.5 K; TRC |
Reduced pressure boiling point
| Tboil (K) | Pressure (bar) | Reference | Comment |
|---|---|---|---|
| 487.2 | 0.020 | Aldrich Chemical Company Inc., 1990 | BS |
| 472.2 | 0.013 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 111.9 | 461. | A | Stephenson and Malanowski, 1987 | Based on data from 454. to 469. K.; AC |
| 106.8 | 319. | A,ME | Stephenson and Malanowski, 1987 | Based on data from 310. to 328. K. See also Omar, 1967.; AC |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 161.4 | 301.5 | ME | Stephenson and Malanowski, 1987 | Based on data from 297. to 306. K. See also Omar, 1967.; AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 59.83 | 307. | Omar, 1967 | AC |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 6.373 | 300.15 | crystaline, II, á | crystaline, I, à transition | King and Garner, 1934 | DH |
| 12.339 | 304.2 | crystaline, I, à | liquid, liq transition | King and Garner, 1934 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cheshko and Shvaika, 1971
Cheshko, F.F.; Shvaika, T.N.,
Syntheses and Identification of Esters of Certain Mono- and Di-carboxylic Acids,
Zh. Prikl. Khim., 1971, 44, 1107-16. [all data]
Boelhouwer, Nederbragt, et al., 1950
Boelhouwer, J.W.M.; Nederbragt, G.W.; Verberg, G.W.,
Viscosity data of organic liquids,
Appl. Sci. Res., Sect. A, 1950, 2, 249. [all data]
Deffet, 1940
Deffet, L.,
Piezometric Research. Temperatures of Fusion and Transformation,
Bull. Soc. Chim. Belg., 1940, 49, 223. [all data]
Baker and Smyth, 1938
Baker, W.O.; Smyth, C.P.,
The Possibility of Molecular Rotation in the Solid Form of Cetyl Alcohol and Three Long-Chain Ethyl Esters,
J. Am. Chem. Soc., 1938, 60, 1229. [all data]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [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]
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]
Omar, 1967
Omar, M.M.,
Vapour pressures, heats of sublimation, and heats of vaporisation for straight-chain ethyl esters,
J. Chem. Soc., C, 1967, 2038, https://doi.org/10.1039/j39670002038
. [all data]
King and Garner, 1934
King, A.M.; Garner, W.E.,
The heats of crystallisation of the ethyl esters of the monobasic aliphatic acids, 1934, J. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - 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.