Octadecanoic acid, butyl ester
- Formula: C22H44O2
- Molecular weight: 340.5836
- IUPAC Standard InChI: InChI=1S/C22H44O2/c1-3-5-7-8-9-10-11-12-13-14-15-16-17-18-19-20-22(23)24-21-6-4-2/h3-21H2,1-2H3
- IUPAC Standard InChIKey: ULBTUVJTXULMLP-UHFFFAOYSA-N
- CAS Registry Number: 123-95-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Stearic acid, butyl ester; n-Butyl octadecanoate; n-Butyl stearate; Apex 4; Butyl octadecanoate; Butyl stearate; Emerest 2325; Groco 5810; Kessco BSC; Kesscoflex BS; Polycizer 332; RC Plasticizer B-17; Starfol BS-100; Tegester butyl stearate; Wickenol 122; Witcizer 200; Witcizer 201; BS; Uniflex bys; ADK STAB LS-8; Kemester 5510; Kessco BS; Oleo-Coll LP; Oleoyl sarcosine; Priolube 1451; Radia 7051; Uniflex BYS-tech; Unimate BYS; Witconol 2326; NSC 4820
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Ttriple | 299.72 | K | N/A | Kalinowska and Jackowski, 1986 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 99.9 | 367. | A,T | Stephenson and Malanowski, 1987 | Based on data from 352. - 399. K. See also Perry and Weber, 1949.; AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 37.48 | 299.7 | Kalinowska and Jackowski, 1986, 2 | AC |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 7.7 | 288.4 | Kalinowska and Jackowski, 1986 | CAL |
| 125.05 | 299.7 |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.220 | 288.4 | crystaline, II | crystaline, I | Kalinowska and Jackowski, 1986, 2 | DH |
| 37.480 | 299.72 | crystaline, I | liquid | Kalinowska and Jackowski, 1986, 2 | DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 7.70 | 288.4 | crystaline, II | crystaline, I | Kalinowska and Jackowski, 1986, 2 | DH |
| 121.5 | 299.72 | crystaline, I | liquid | Kalinowska and Jackowski, 1986, 2 | 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.
Kalinowska and Jackowski, 1986
Kalinowska, B.; Jackowski, A.W.,
Enthalpies of two phase transitions in the high-temperature form of n-butyl octadecanoate,
J. Chem. Thermodyn., 1986, 18, 8, 715, https://doi.org/10.1016/0021-9614(86)90104-7
. [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]
Perry and Weber, 1949
Perry, E.S.; Weber, W.H.,
Vapor Pressures of Phlegmatic Liquids. II. High Molecular Weight Esters and Silicone Oils,
J. Am. Chem. Soc., 1949, 71, 11, 3726-3730, https://doi.org/10.1021/ja01179a039
. [all data]
Kalinowska and Jackowski, 1986, 2
Kalinowska, B.; Jackowski, A.W.,
Enthalpies of two phase transitions in the high-temperature form of n-butyl octadecanoate,
J. Chem. Thermodynam., 1986, 18, 715-717. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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