Benzaldehyde, 3-methyl-
- Formula: C8H8O
- Molecular weight: 120.1485
- IUPAC Standard InChIKey: OVWYEQOVUDKZNU-UHFFFAOYSA-N
- CAS Registry Number: 620-23-5
- 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: m-Tolualdehyde; m-Methylbenzaldehyde; 3-Methylbenzaldehyde; m-Toluylaldehyde; 3-CH3C6H4CHO
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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 by: Robert L. Brown and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 472.2 | K | N/A | Weast and Grasselli, 1989 |
Reduced pressure boiling point
Tboil (K) | Pressure (atm) | Reference |
---|---|---|
366.7 | 0.022 | Weast and Grasselli, 1989 |
Reaction thermochemistry 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: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C8H7O- + =
By formula: C8H7O- + H+ = C8H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 371.3 ± 2.1 | kcal/mol | G+TS | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 364.2 ± 2.0 | kcal/mol | IMRE | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale |
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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
View reactions leading to C8H8O+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 200.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 193.1 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.408 ± 0.013 | ECD | Wentworth, Kao, et al., 1975 | B |
De-protonation reactions
C8H7O- + =
By formula: C8H7O- + H+ = C8H8O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 371.3 ± 2.1 | kcal/mol | G+TS | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 364.2 ± 2.0 | kcal/mol | IMRE | Caldwell and Bartmess | gas phase; value altered from reference due to change in acidity scale; B |
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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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
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)
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Gas Chromatography, 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
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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-NW-3491 |
NIST MS number | 229279 |
Gas Chromatography
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), 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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | OV-101 | 140. | 1060.6 | Righezza, Hassani, et al., 1996 | N2, Chromosorb G HP; Column length: 5. m |
Packed | OV-101 | 160. | 1070.4 | Hassani and Meklati, 1992 | N2, Chromosorb G HP; Column length: 5. m |
Packed | Apiezon L | 130. | 1081. | Wehrli and Kováts, 1959 | Celite; Column length: 2.25 m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5MS | 1059. | Vujisic L., Vuckovic I., et al., 2006 | 30. m/0.25 mm/0.25 μm, H2, 4.3 K/min; Tstart: 50. C; Tend: 285. C |
Van Den Dool and Kratz RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Supelcowax-10 | 1624. | Chung, Yung, et al., 2002 | 60. m/0.25 mm/0.25 μm, He, 35. C @ 5. min, 2. K/min, 195. C @ 90. min |
Capillary | Supelcowax-10 | 1624. | Chung, Yung, et al., 2001 | 60. m/0.25 mm/0.25 μm, He, 35. C @ 5. min, 2. K/min, 195. C @ 90. min |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 MS | 1086. | 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 | VF-5MS | 1047. | Kowalski, 2008 | 30. m/0.25 mm/0.25 μm, Helium, 240. C @ 1. min, 20. K/min; Tend: 320. C |
Capillary | Ultra-1 | 1034. | Okumura, 1991 | 25. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C |
Capillary | SE-30 | 1040. | Heydanek and McGorrin, 1981 | 40. C @ 3. min, 3. K/min; Column length: 50. m; Column diameter: 0.5 mm; Tend: 170. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 1056. | Ebrahimi and Hadjmohammadi, 2006 | Program: not specified |
Capillary | SE-30 | 1053. | Vinogradov, 2004 | Program: not specified |
Capillary | Methyl Silicone | 1081. | N/A | Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1611. | Steullet and Guerin, 1994 | H2, 60. C @ 5. min, 8. K/min, 230. C @ 10. min; Column length: 30. m; Phase thickness: 0.25 μm |
Capillary | DB-Wax | 1623. | Steullet and Guerin, 1994 | H2, 60. C @ 5. min, 8. K/min, 230. C @ 10. min; Column length: 30. m; Phase thickness: 0.25 μm |
Capillary | DB-Wax | 1626. | Steullet and Guerin, 1994 | 30. m/0.25 mm/0.25 μm, He, 60. C @ 5. min, 8. K/min, 230. C @ 10. min |
Capillary | DB-Wax | 1626. | Steullet and Guerin, 1994 | 30. m/0.25 mm/0.25 μm, He, 60. C @ 5. min, 8. K/min, 230. C @ 10. min |
Capillary | DB-Wax | 1627. | Steullet and Guerin, 1994 | 30. m/0.25 mm/0.25 μm, He, 60. C @ 5. min, 8. K/min, 230. C @ 10. min |
Capillary | DB-Wax | 1628. | Steullet and Guerin, 1994 | 30. m/0.25 mm/0.25 μm, He, 60. C @ 5. min, 8. K/min, 230. C @ 10. min |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-Innowax | 1630. | Narain, Galvao, et al., 2007 | 30. m/0.25 mm/0.25 μm, Helium; Program: 30 0C (5 min) 5 0C/min -> 100 0C (5 min) 1 0C/min -> 130 0C 10 0C/min -> 195 0C (45 min) |
Capillary | Carbowax 20M | 1632. | Vinogradov, 2004 | Program: not specified |
References
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Caldwell and Bartmess
Caldwell, G.; Bartmess, J.E.,
, Unpublished results. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Wentworth, Kao, et al., 1975
Wentworth, W.E.; Kao, L.W.; Becker, R.S.,
Electron affinities of substituted aromatic compounds,
J. Phys. Chem., 1975, 79, 1161. [all data]
Righezza, Hassani, et al., 1996
Righezza, M.; Hassani, A.; Meklati, B.Y.; Chrétien, J.R.,
Quantitative structure-retention relationships (QSRR) of congeneric aromatics series studied on phenyl OV phases in gas chromatography,
J. Chromatogr. A, 1996, 723, 1, 77-91, https://doi.org/10.1016/0021-9673(95)00816-0
. [all data]
Hassani and Meklati, 1992
Hassani, A.; Meklati, B.Y.,
Gas chromatographic behaviour of monosubstituted benzenes, benzaldehydes and acetophenones on OV polymethylphenyl-silicone stationary phases,
Chromatographia, 1992, 33, 5/6, 267-271, https://doi.org/10.1007/BF02276193
. [all data]
Wehrli and Kováts, 1959
Wehrli, A.; Kováts, E.,
Gas-chromatographische Charakterisierung ogranischer Verbindungen. Teil 3: Berechnung der Retentionsindices aliphatischer, alicyclischer und aromatischer Verbindungen,
Helv. Chim. Acta, 1959, 7, 7, 2709-2736, https://doi.org/10.1002/hlca.19590420745
. [all data]
Vujisic L., Vuckovic I., et al., 2006
Vujisic L.; Vuckovic I.; Tesevic V.; Dokovic D.; Ristic M.S.; Janackovic P.; Milosavljevic S.,
Comparative examination of the essential oils of Anthemis ruthenica and A-arvensis wild-growing in Serbia,
Flavour Fragr. J., 2006, 21, 3, 458-461, https://doi.org/10.1002/ffj.1681
. [all data]
Chung, Yung, et al., 2002
Chung, H.-Y.; Yung, I.K.S.; Ma, W.C.J.; Kim, J.-S.,
Analysis of volatile components in frozen and dried scallops (Patinopecten yessoensis) by gas chromatography/mass spectrometry,
Food Res. Int., 2002, 35, 1, 43-53, https://doi.org/10.1016/S0963-9969(01)00107-7
. [all data]
Chung, Yung, et al., 2001
Chung, H.Y.; Yung, I.K.S.; Kim, J.-S.,
Comparison of volatile components in dried scallops (Chlamys farreri and Patinopecten yessoensis) prepared by boiling and steaming methods,
J. Agric. Food Chem., 2001, 49, 1, 192-202, https://doi.org/10.1021/jf000692a
. [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]
Kowalski, 2008
Kowalski, R.,
Antimicrobial activity of essential oils and extracts of rosinweed (Silphoum trifoliatum and Silphium integrifolium) plants used by the American Indians,
Flav. Fragr. J., 2008, 23, 6, 426-433, https://doi.org/10.1002/ffj.1901
. [all data]
Okumura, 1991
Okumura, T.,
retention indices of environmental chemicals on methyl silicone capillary column,
Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333
. [all data]
Heydanek and McGorrin, 1981
Heydanek, M.G.; McGorrin, R.J.,
Gas chromatography-mass spectroscopy identification of volatiles from rancid oat groats,
J. Agric. Food Chem., 1981, 29, 5, 1093-1095, https://doi.org/10.1021/jf00107a051
. [all data]
Ebrahimi and Hadjmohammadi, 2006
Ebrahimi, P.; Hadjmohammadi, M.R.,
Simultaneous modeling of the Kovats retention indices on phenyl OV stationary phases with different polarity using MLR and ANN,
QSAR Comb. Sci., 2006, 25, 10, 836-845, https://doi.org/10.1002/qsar.200530145
. [all data]
Vinogradov, 2004
Vinogradov, B.A.,
Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]
Steullet and Guerin, 1994
Steullet, P.; Guerin, P.M.,
Identification of vertebrate volatiles stimulating olfactory receptors on tarsus I of the tick Amblyomma variegatum fabricus (Ixodidae). I. Receptors within the Haller's organ capsule,
J. Comp. Physiol. A, 1994, 174, 1, 27-38, https://doi.org/10.1007/BF00192003
. [all data]
Narain, Galvao, et al., 2007
Narain, N.; Galvao, M. deS.; Ferreira, D.DaS.; Navarro, D.M.A.F.,
Flavor biogeneration in Mangaba (Hancornia speciosa Gomes) fruit,
BioEng. Campinas, 2007, 1, 1, 25-31. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
EA Electron affinity Tboil Boiling point ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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