Octadecanoic acid, ethyl ester
- Formula: C20H40O2
- Molecular weight: 312.5304
- 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
View 3d structure (requires JavaScript / HTML 5) - Other names: Stearic acid, ethyl ester; Ethyl n-octadecanoate; Ethyl octadecanoate; Ethyl stearate; Radia 7185; Ethyl ocatadecanoate; Ethyl octadecanoate (Ethyl stearate)
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Normal alkane RI, non-polar column, custom temperature program
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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | RTX-5 MS | HP-5 | BPX-5 | BPX-5 | DB-5MS |
| Column length (m) | 15. | 30. | 30. | 30. | 30. |
| Carrier gas | Helium | Helium | Helium | Helium | He |
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.32 | 0.25 | 0.25 | 0.25 |
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Program | 35 0C (6 min) 5 0C/min -> 150 0C 10 0C/min -> 280 0C (3 min) | 60 0C (3 min) 10 0C/min -> 280 0C (1 min) 3 0C/min -> 320 0C (20 min) | 35 0C (5 min) 3 0C/min -> 210 0C 40 0C/min -> 240 0C (10 min) | not specified | 60C => 3C/min => 180C => 250C (2min) |
| I | 2192. | 2197. | 2200. | 2196. | 2191. |
| Reference | Nadaf, Halimi, et al., 2012 | Povolo, Pelizzola, et al., 2009 | se Souza, Cardeal, et al., 2009 | se Souza, Cardeal, et al., 2009 | Tuberoso, Barra, et al., 2006 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
|---|---|---|---|---|---|
| Active phase | Polydimethyl siloxane with 5 % Ph groups | OV-1 | SE-30 | HP-5 | HP-5MS |
| Column length (m) | 30. | 30. | 30. | ||
| Carrier gas | He | He | He | ||
| Substrate | |||||
| Column diameter (mm) | 0.25 | 0.25 | 0.25 | ||
| Phase thickness (μm) | 0.25 | 0.25 | 0.25 | ||
| Program | not specified | 45 0C (4 min) 3 0C/min -> 75 0C 4 0C/min -> 115 0C 6 0C/min -> 312 0C | not specified | 35C => 5C/min => 220C => 10C/min => 240C(5min) | 35C => 5C/min => 160C => 10C/min => 220C (10min) |
| I | 2195. | 2184. | 2180. | 2195. | 2195. |
| Reference | Pino, Marbot, et al., 2005 | Hafez and Abdel-Salam, 2004 | Vinogradov, 2004 | Demyttenaere, Sánchez Martínez, et al., 2003 | Demyttenaere, Sánchez Martínez, et al., 2002 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
| Column type | Capillary | Capillary | Capillary |
|---|---|---|---|
| Active phase | HP-5 | OV-101 | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. |
| Column length (m) | 30. | 50. | 50. |
| Carrier gas | He | He | Hydrogen |
| Substrate | |||
| Column diameter (mm) | 0.25 | 0.24 | 0.32 |
| Phase thickness (μm) | 0.25 | ||
| Program | 40C (10min) => 3C/min => 120C => 10C/min => 250C (5min) | not specified | not specified |
| I | 2207. | 2175. | 2180. |
| Reference | Ansorena, Astiasarán, et al., 2000 | Zenkevich and Malamakhov, 1987 | Waggott and Davies, 1984 |
| Comment | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, non-polar column, custom temperature program, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Nadaf, Halimi, et al., 2012
Nadaf, M.; Halimi, M.; Mortazavi, M.,
Identification of nonpolar chemical composition Spartium junceum flower growing in Iran by GC-MS,
Middle-East J. Sci. Res., 2012, 11, 2, 221-224. [all data]
Povolo, Pelizzola, et al., 2009
Povolo, M.; Pelizzola, V.; Ravera, D.; Contarini, G.,
Significance of the nonvolatile minor compounds of the neutral lipid fraction as markers of the origin of dairy products,
J. Agric. Food Chem., 2009, 57, 16, 7387-7394, https://doi.org/10.1021/jf8040353
. [all data]
se Souza, Cardeal, et al., 2009
se Souza, P.P.; Cardeal, Z.DeL.; Augusti, R.; Morrison, P.; Marriott, P.J.,
Determination of volatile compounds in Brazilian distilled cachaca by using comprehensive two-dimensional gas chromatography and effects of production pathways,
J. Chromatogr. A., 2009, 1216, 14, 2881-2890, https://doi.org/10.1016/j.chroma.2008.10.061
. [all data]
Tuberoso, Barra, et al., 2006
Tuberoso, C.I.G.; Barra, A.; Angioni, A.; Sarritzu, E.; Pirisi, F.M.,
Chemical Composition of Volatiles in Sardinian Myrtle (Myrtus communis L.) Alcoholic Extracts and Essential Oils,
J. Agric. Food Chem., 2006, 54, 4, 1420-1426, https://doi.org/10.1021/jf052425g
. [all data]
Pino, Marbot, et al., 2005
Pino, J.A.; Marbot, R.; Rosado, A.; Vázquez, C.,
Volatile constituents of Malay rose apple [Syzygium malaccense (L.) Merr. Perry],
Flavour Fragr. J., 2005, 20, 98-100. [all data]
Hafez and Abdel-Salam, 2004
Hafez, S.S.; Abdel-Salam, H.A.,
chemical composition and antimicrobial activity of the volatile constituents of thuja occidentalis L. growing in Egipt,
Alexandria J. Pharm. Sci., 2004, 18, 1, 41-47. [all data]
Vinogradov, 2004
Vinogradov, B.A.,
Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]
Demyttenaere, Sánchez Martínez, et al., 2003
Demyttenaere, J.C.R.; Sánchez Martínez, J.I.; Verhé, R.; Sandra, P.; de Kimpe, N.,
Analysis of volatiles of malt whisky by solid-phase microextraction and stir bar sorptive extraction,
J. Chromatogr. A, 2003, 985, 1-2, 221-232, https://doi.org/10.1016/S0021-9673(02)01471-1
. [all data]
Demyttenaere, Sánchez Martínez, et al., 2002
Demyttenaere, J.C.R.; Sánchez Martínez, J.I.; Téllez Valdés, M.J.; Verhé, R.; Sandra, P.,
Analysis of volatile esters of malt whisky using solid phase microextraction and dynamic headspace
in 25th International Symposium on Capillary Chromatography, 2002, 1-13. [all data]
Ansorena, Astiasarán, et al., 2000
Ansorena, D.; Astiasarán, I.; Bello, J.,
Influence of the simultaneous addition of the protease flavourzyme and the lipase novozyme 677BG on dry fermented sausage compounds extracted by SDE and analyzed by GC-MS,
J. Agric. Food Chem., 2000, 48, 6, 2395-2400, https://doi.org/10.1021/jf990931y
. [all data]
Zenkevich and Malamakhov, 1987
Zenkevich, I.G.; Malamakhov, A.C.,
Evaluation of Molecular Weights of Organic Compounds based on Retention Parameters at Chromato-Spectral Analysys. Additional Criterion of Molecular Ions' Identification,
Vestn. St. Petersb. Univ. Ser. 4: Fiz. Khim, 1987, 2, 101-106. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
Notes
Go To: Top, Normal alkane RI, non-polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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