Benzaldehyde, 2,4-dimethyl-
- Formula: C9H10O
- Molecular weight: 134.1751
- IUPAC Standard InChI: InChI=1S/C9H10O/c1-7-3-4-9(6-10)8(2)5-7/h3-6H,1-2H3
- IUPAC Standard InChIKey: GISVICWQYMUPJF-UHFFFAOYSA-N
- CAS Registry Number: 15764-16-6
- 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: 2,4-Dimethylbenzaldehyde; 2,4-Dimethylbenzenecarboxaldehyde
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Phase change data
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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
AC - William E. Acree, Jr., James S. Chickos
Reduced pressure boiling point
| Tboil (K) | Pressure (atm) | Reference | Comment |
|---|---|---|---|
| 376.0 | 0.018 | Aldrich Chemical Company Inc., 1990 | BS |
| 372.2 | 0.013 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 13.7 | 373. | A | Stephenson and Malanowski, 1987 | Based on data from 358. - 489. K.; AC |
Gas phase ion energetics data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to C9H10O+ (ion structure unspecified)
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C7H7+ | 11.2 | ? | EI | Schwarz, Bohlmann, et al., 1973 |
IR Spectrum
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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
Gas Phase Spectrum
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Additional Data
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| Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | Sadtler Research Labs Under US-EPA Contract |
| State | gas |
Mass spectrum (electron ionization)
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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
Spectrum
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Additional Data
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| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | Japan AIST/NIMC Database- Spectrum MS-IW- 589 |
| NIST MS number | 239029 |
Gas Chromatography
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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
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 | 1180. | Flamini, Luigi Cioni, et al., 2004 | 30. m/0.25 mm/0.25 μm, N2, 60. C @ 10. min, 5. K/min; Tend: 220. C |
| Capillary | DB-5 | 1180. | Flamini, Cioni, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 60. C; Tend: 240. C |
Van Den Dool and Kratz RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | CP-Wax 52CB | 1742. | Romeo, Ziino, et al., 2007 | 60. m/0.25 mm/0.25 μm, He; Program: 45C(5min) => 10C/min => 80C => 2C/min => 240C |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 MS | 1181. | Radulovic, Blagojevic, et al., 2010 | 30. m/0.25 mm/0.25 μm, Helium, 5. K/min, 290. C @ 10. min; Tstart: 70. C |
| Capillary | HP-5 MS | 1178. | Radulovic, Dordevic, et al., 2010 | 30. m/0.25 mm/0.25 μm, Helium, 5. K/min, 290. C @ 10. min; Tstart: 70. C |
| Capillary | OV-101 | 1139. | Misharina, Golovnya, et al., 1991 | 50. m/0.32 mm/0.5 μm, He, 4. K/min; Tstart: 50. C; Tend: 250. C |
| Capillary | DB-1 | 1143. | Habu, Flath, et al., 1985 | 3. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tstart: 0. C; Tend: 250. C |
| Capillary | DB-1 | 1140. | Habu, Flath, et al., 1985 | 3. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tstart: 50. C; Tend: 250. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SLB-5 MS | 1182. | Mondello, 2012 | 30. m/0.25 mm/0.25 μm, Helium; Program: not specified |
| Capillary | SLB-5 MS | 1190. | Mondello, 2012 | 30. m/0.25 mm/0.25 μm, Helium; Program: not specified |
| Capillary | HP-5 | 1175. | Dou, Li, et al., 2007 | 30. m/0.32 mm/0.25 μm, He; Program: 40 0C (2 min) 110 0C (2 min) 3 0C/min -> 170 0C (2 min) 4 0C/min -> 220 0C (2 min) 10 0C/min -> 260 0C (5 min) |
| Capillary | CP Sil 8 CB | 1217. | Meekijjaroenroj, Bessière, et al., 2007 | 30. m/0.25 mm/0.25 μm, He; Program: 50C(3min) => 3C/min => 100C => 2.7C/min => 140C => 2.4C/min => 180C => 6C/min => 250C |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-Wax | 1710. | Alves and Franco, 2003 | 30. m/0.25 mm/0.5 μm, H2, 50. C @ 10. min, 3. K/min, 200. C @ 10. min |
References
Go To: Top, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Schwarz, Bohlmann, et al., 1973
Schwarz, H.; Bohlmann, F.; Vorlaender, W.,
Elektronenstossinduzierte fragmenterung von polymethylbenzaldehyden. III. Bildung und zerfall des formyltropylium-dimethylbenzaldehyd,
Org. Mass Spectrom., 1973, 7, 1005. [all data]
Flamini, Luigi Cioni, et al., 2004
Flamini, G.; Luigi Cioni, P.; Morelli, I.,
Essential oils of Galeopsis pubescens and G. tetrahit from Tuscany (Italy),
Flavour Fragr. J., 2004, 19, 4, 327-329, https://doi.org/10.1002/ffj.1307
. [all data]
Flamini, Cioni, et al., 2003
Flamini, G.; Cioni, P.L.; Morelli, I.; Ceccarini, L.; Andolfi, L.; Macchia, M.,
Composition of the essential oil of Medicago marina L. from the coastal dunes of Tuscany, Italy,
Flavour Fragr. J., 2003, 18, 5, 460-462, https://doi.org/10.1002/ffj.1253
. [all data]
Romeo, Ziino, et al., 2007
Romeo, V.; Ziino, M.; Giuffrrida, D.; Condurso, C.; Verzera, A.,
Flavour profile of capers (Capparis spinosa L.) from the Eolian Archipelago by HS-SPME/GC?MS,
Food Chem., 2007, 101, 3, 1272-1278, https://doi.org/10.1016/j.foodchem.2005.12.029
. [all data]
Radulovic, Blagojevic, et al., 2010
Radulovic, N.; Blagojevic, P.; Palic, R.,
Comparative study of the leaf volatiles of Arctostaphylos uva-ursi (L.) Spreng. and Vaccinium vitis-idaea L. (Ericaceae),
Molecules, 2010, 15, 9, 6168-6185, https://doi.org/10.3390/molecules15096168
. [all data]
Radulovic, Dordevic, et al., 2010
Radulovic, N.; Dordevic, N.; Markovic, M.; Palic, R.,
Volatile constituents of Glechoma Hirsuta Waldst. Kit. and G. Hederacea L. (Lamiaceae),
Bull. Chem. Soc. Ethiop., 2010, 24, 1, 67-76, https://doi.org/10.4314/bcse.v24i1.52962
. [all data]
Misharina, Golovnya, et al., 1991
Misharina, T.A.; Golovnya, R.V.; Charnomskii, V.V.,
Volatile components of boiled shrimp funchalia woodwardi and crab geryon maritae,
Zh. Anal. Khim., 1991, 46, 1421-1429. [all data]
Habu, Flath, et al., 1985
Habu, T.; Flath, R.A.; Mon, T.R.; Morton, J.F.,
Volatile components of Rooibos tea (Aspalathus linearis),
J. Agric. Food Chem., 1985, 33, 2, 249-254, https://doi.org/10.1021/jf00062a024
. [all data]
Mondello, 2012
Mondello, L.,
HS-SPME-GCxGC-MS analysis of Yerba Mate (Ilex paraguariensis)
in Shimadzu GC-GC application compendium of comprehensive 2D GC, Vol. 1-5, Shimadzu Corp., 2012, 1-29. [all data]
Dou, Li, et al., 2007
Dou, H.-L.; Li, C.-M.; Gu, H.-F.; Hao, J.-F.,
Comparative analysis on aromatic components of green tea and fresh green tea beverage using HS-SPME/GC-MS/GC-olfactometry/RI methods,
Journal of Tea Science, 2007, 27, 1, 51-60. [all data]
Meekijjaroenroj, Bessière, et al., 2007
Meekijjaroenroj, A.; Bessière, J.-M.; Anstett, M.-C.,
Chemistry of floral scents in four Licuala species (Arecaceae),
Flavour Fragr. J., 2007, 22, 4, 300-310, https://doi.org/10.1002/ffj.1797
. [all data]
Alves and Franco, 2003
Alves, G.L.; Franco, M.R.B.,
Headspace gas chromatography-mass spectrometry of volatile compounds in murici (Byrsonima crassifolia L. Rich),
J. Chromatogr. A, 2003, 985, 1-2, 297-301, https://doi.org/10.1016/S0021-9673(02)01398-5
. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy Tboil Boiling point ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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