Benzene, 1-methoxy-3-methyl-
- Formula: C8H10O
- Molecular weight: 122.1644
- IUPAC Standard InChI: InChI=1S/C8H10O/c1-7-4-3-5-8(6-7)9-2/h3-6H,1-2H3
- IUPAC Standard InChIKey: OSIGJGFTADMDOB-UHFFFAOYSA-N
- CAS Registry Number: 100-84-5
- 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: Anisole, m-methyl-; m-Cresol methyl ether; m-Methoxytoluene; m-Methylanisole; Methyl m-tolyl ether; 1-Methoxy-3-methylbenzene; 3-Methoxytoluene; 3-Methylanisole; m-Cresyl methyl ether; Methyl m-cresyl ether; Methyl 3-methylphenyl ether; 1-Methyl-3-methoxybenzene; 3-Methylmethoxybenzene; 3-Methyl-1-methoxybenzene; NSC 6255
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Gas phase ion energetics data
Go To: Top, Mass spectrum (electron ionization), 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 as indicated in comments:
MM - Michael M. Meot-Ner (Mautner)
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C8H10O+ (ion structure unspecified)
Proton affinity at 298K
| Proton affinity (kcal/mol) | Reference | Comment |
|---|---|---|
| 206. ± 2. | van Beelen, Koblenz, et al., 2004 | T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM |
Gas basicity at 298K
| Gas basicity (review) (kcal/mol) | Reference | Comment |
|---|---|---|
| 198. ± 2. | van Beelen, Koblenz, et al., 2004 | T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.0 | PE | Kobayashi and Nagakura, 1974 | LLK |
| 8.4 ± 0.1 | EI | Brown, 1970 | RDSH |
| 8.31 ± 0.05 | EI | Pignataro, Foffani, et al., 1966 | RDSH |
| 8.1 ± 0.15 | CTS | Voigt and Reid, 1964 | RDSH |
| 8.28 | PE | Kobayashi and Nagakura, 1974 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C6H7+ | 12.9 | ? | EI | Harrison, Haynes, et al., 1965 | RDSH |
| C7H7O+ | 11.6 ± 0.1 | CH3 | EI | Brown, 1970 | RDSH |
| C7H7O+ | 11.3 ± 0.1 | CH3 | EI | Tait, Shannon, et al., 1962 | RDSH |
| C7H8+ | 11.2 ± 0.1 | CH2O | EI | Brown, 1970 | RDSH |
| C7H9+ | 11.7 | CO+H? | EI | Harrison, Haynes, et al., 1965 | RDSH |
| C8H9O+ | 12.1 ± 0.1 | H | EI | Meyer and Harrison, 1964 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics data, 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
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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-NW- 889 |
| NIST MS number | 228729 |
Gas Chromatography
Go To: Top, Gas phase ion energetics data, 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 | Apiezon L | 100. | 1020. | Bogoslovsky, Anvaer, et al., 1978 | Chromatone N AW DNCS |
| Packed | Apiezon L | 150. | 1036. | Bogoslovsky, Anvaer, et al., 1978 | Chromatone N AW DNCS |
Kovats' RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Packed | Apiezon M | 1029.6 | Jalali-Heravi and Garkani-Nejad, 1993 | Chromosorb W; Column length: 2. m; Program: not specified |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | OV-1 | 999.1 | Gautzsch and Zinn, 1996 | 8. K/min; Tstart: 35. C; Tend: 300. C |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 | 1028. | Larsen and Frisvad, 1995 | 35. C @ 2. min, 6. K/min; Tend: 200. C |
| Capillary | Ultra-1 | 1001. | Okumura, 1991 | 25. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C |
| Capillary | BP-1 | 986. | Wilkins and Scholl, 1989 | 25. m/0.33 mm/1.00 μm, Nitrogen, 30. C @ 4. min, 5. K/min; Tend: 150. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | VB-5 | 1011. | Karlshøj, Nielsen, et al., 2007 | 60. m/0.25 mm/1. μm, He; Program: 35C(1min) => 4C/min => 175C => 10C/min => 260C |
| Capillary | HP-5 | 1006. | Splivallo, Bossi, et al., 2007 | He; Program: 50C => 3C/min => 200C(10min) => 10C/min => 290C(10min) |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | AT-Wax | 1426. | Kiss, Csoka, et al., 2011 | 60. m/0.25 mm/0.25 μm, Helium, 4. K/min; Tstart: 60. C; Tend: 280. C |
| Capillary | Carbowax 20M | 1430. | Seifert and King, 1982 | He, 50. C @ 10. min, 1. K/min, 170. C @ 60. min; Column length: 150. m; Column diameter: 0.64 mm |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-Wax | 1441. | Peng, Yang, et al., 1991 | Program: not specified |
References
Go To: Top, Gas phase ion energetics data, 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.
van Beelen, Koblenz, et al., 2004
van Beelen, E.S.E.; Koblenz, T.A.; Ingemann, S.; Hammerum, S.,
Experimental and theoretical evaluation of proton affinities of furan, the methylphenols, and the related anisoles,
J. Phys. Chem. A, 2004, 108, 2787. [all data]
Kobayashi and Nagakura, 1974
Kobayashi, T.; Nagakura, S.,
Photoelectron spectra of substituted benzenes,
Bull. Chem. Soc. Jpn., 1974, 47, 2563. [all data]
Brown, 1970
Brown, P.,
Kinetic studies in mass spectrometry. VIII. Competing [M-CH3] and [M-CH2O] reactions in substituted anisoles. Approximate activation energies from ionization appearance potentials,
Org. Mass Spectrom., 1970, 4, 519. [all data]
Pignataro, Foffani, et al., 1966
Pignataro, S.; Foffani, A.; Innorta, G.; Distefano, G.,
Molecular structural effects on the ionization potentials for metasubstituted aromatic compounds and for compounds of the type X-CH2-R,
Z. Physik. Chem. (Frankfurt), 1966, 49, 291. [all data]
Voigt and Reid, 1964
Voigt, E.M.; Reid, C.,
Ionization potentials of substituted benzenes and their charge-transfer spectra with tetracyanoethylene,
J. Am. Chem. Soc., 1964, 86, 3930. [all data]
Harrison, Haynes, et al., 1965
Harrison, A.G.; Haynes, P.; McLean, S.; Meyer, F.,
The mass spectra of methyl-substituted cyclopentadienes,
J. Am. Chem. Soc., 1965, 87, 5099. [all data]
Tait, Shannon, et al., 1962
Tait, J.M.S.; Shannon, T.W.; Harrison, A.G.,
The structure of substituted C7 ions from benzyl derivatives at the appearance potential threshold,
J. Am. Chem. Soc., 1962, 84, 4. [all data]
Meyer and Harrison, 1964
Meyer, F.; Harrison, A.G.,
An electron impact study of methyl phenyl ethers,
Can. J. Chem., 1964, 42, 2008. [all data]
Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S.,
Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]
Jalali-Heravi and Garkani-Nejad, 1993
Jalali-Heravi, M.; Garkani-Nejad, Z.,
Prediction of gas chromatographic retention indices of some benzene derivatives,
J. Chromatogr., 1993, 648, 2, 389-393, https://doi.org/10.1016/0021-9673(93)80421-4
. [all data]
Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P.,
Use of incremental models to estimate the retention indexes of aromatic compounds,
Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946
. [all data]
Larsen and Frisvad, 1995
Larsen, T.O.; Frisvad, J.C.,
Characterization of volatile metabolites from 47 Penicillium taxa,
Mycol. Res., 1995, 99, 10, 1153-1166, https://doi.org/10.1016/S0953-7562(09)80271-2
. [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]
Wilkins and Scholl, 1989
Wilkins, C.K.; Scholl, S.,
Volatile metabolites of some barley storage molds,
Internat. J. Food Microbiol., 1989, 8, 1, 11-17, https://doi.org/10.1016/0168-1605(89)90075-5
. [all data]
Karlshøj, Nielsen, et al., 2007
Karlshøj, K.; Nielsen, P.V.; Larsen, T.O.,
Prediction of Penicillium expansum Spoilage and Patulin Concentration in Apples Used for Apple Juice Production by Electronic Nose Analysis,
J. Agric. Food Chem., 2007, 55, 11, 4289-4298, https://doi.org/10.1021/jf070134x
. [all data]
Splivallo, Bossi, et al., 2007
Splivallo, R.; Bossi, S.; Maffei, M.; Bonfante, P.,
Discrimination of truffle fruiting body versus mycelial aromas by stir bar sorptive extraction,
Phytochemistry, 2007, 68, 20, 2584-2598, https://doi.org/10.1016/j.phytochem.2007.03.030
. [all data]
Kiss, Csoka, et al., 2011
Kiss, M.; Csoka, M.; Gyorfi, J.; Korany, K.,
Comparison of the fragrance constituents of Tuber aestivium and Tuber Brumale gathered in Hungary,
J. Appl. Botany Food Quality, 2011, 84, 102-110. [all data]
Seifert and King, 1982
Seifert, R.M.; King, A.D., Jr.,
Identification of some volatile constituents of Aspergillus clavatus,
J. Agric. Food Chem., 1982, 30, 4, 786-790, https://doi.org/10.1021/jf00112a044
. [all data]
Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F.,
Prediction of rentention idexes. II. Structure-retention index relationship on polar columns,
J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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