Thiocyanic acid, methyl ester
- Formula: C2H3NS
- Molecular weight: 73.117
- IUPAC Standard InChI: InChI=1S/C2H3NS/c1-4-2-3/h1H3
- IUPAC Standard InChIKey: VYHVQEYOFIYNJP-UHFFFAOYSA-N
- CAS Registry Number: 556-64-9
- 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: Methyl sulfocyanate; Methyl thiocyanate; CH3SCN; Methane, thiocyanato-; Methylrhodanid; Methylthiokyanat
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Gas phase ion energetics data
Go To: Top, IR Spectrum, 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Proton affinity (review) | 190.4 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 183.1 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.96 ± 0.05 | PE | Neijzen and DeLange, 1980 | LLK |
| 10.07 ± 0.01 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
| 9.96 ± 0.05 | PE | Neijzen and DeLange, 1980 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C2H2NS+ | 12.6 ± 0.1 | H | EI | Taft, Martin, et al., 1965 | RDSH |
IR Spectrum
Go To: Top, Gas phase ion energetics data, 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 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)
Go To: Top, 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).
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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- 994 |
| NIST MS number | 230450 |
Gas Chromatography
Go To: Top, 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
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Mega 5MS | 661. | Condurso, Verzera, et al., 2006 | 60. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 60. C; Tend: 240. C |
| Capillary | HP-5 | 723. | Solina, Baumgartner, et al., 2005 | 25. m/0.2 mm/1. μm, He, 5. K/min, 280. C @ 5. min; Tstart: 40. C |
| Capillary | DB-1 | 665. | Flath, Light, et al., 1990 | 50. C @ 0.1 min, 4. K/min; Column length: 60. m; Column diameter: 0.32 mm; Tend: 250. C |
Van Den Dool and Kratz RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 | 711. | Engel, Baty, et al., 2002 | 30. m/0.25 mm/0.25 μm, He; Program: 5C(5min) => 3C/min => 20C => 5C/min => 100C 15C/min => 150C (5min) |
Van Den Dool and Kratz RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-Wax | 1276. | Cho, Namgung, et al., 2008 | 30. m/0.25 mm/0.25 μm, He, 40. C @ 1. min, 4. K/min, 200. C @ 10. min |
| Capillary | DB-Wax | 1276. | Cho, Choi, et al., 2006 | 60. m/0.25 mm/0.25 μm, He, 40. C @ 1. min, 4. K/min, 200. C @ 10. min |
| Capillary | DB-Wax | 1274. | Cho, Choi, et al., 2006 | 60. m/0.25 mm/0.25 μm, He, 40. C @ 1. min, 4. K/min, 200. C @ 10. min |
| Capillary | DB-Wax | 1266. | Cha, Kim, et al., 1998 | 60. m/0.25 mm/0.25 μm, 40. C @ 5. min, 3. K/min, 200. C @ 60. min |
Van Den Dool and Kratz RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | CP-Wax 52CB | 1278. | Condurso, Verzera, et al., 2006 | 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 | Optima-5 MS | 693. | Goeminne, Vandendriessche, et al., 2012 | 30. m/0.25 mm/0.25 μm, Helium, 35. C @ 3. min, 10. K/min, 250. C @ 5. min |
| Capillary | DB-1 | 665. | Hansen, Buttery, et al., 1992 | 30. C @ 25. min, 4. K/min, 200. C @ 20. min; Column length: 60. m; Column diameter: 0.32 mm |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Supelcowax-10 | 1295. | Forney and Jordan, 1998 | 60. m/0.53 mm/1. μm, He; Program: 40C (2min) => 16C/min => 120C => 15C/min => 240C(3min) |
References
Go To: Top, 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.
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]
Neijzen and DeLange, 1980
Neijzen, B.J.M.; DeLange, C.A.,
Photoelectron spectroscopy of some thiocyanates, isocyanates and isothiocyanates,
J. Electron Spectrosc. Relat. Phenom., 1980, 18, 179. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Taft, Martin, et al., 1965
Taft, R.W.; Martin, R.H.; Lampe, F.W.,
Stabilization energies of substituted methyl cations. The effect of strong demand on the resonance order,
J. Am. Chem. Soc., 1965, 87, 2490. [all data]
Condurso, Verzera, et al., 2006
Condurso, C.; Verzera, A.; Romeo, V.; Ziino, M.; Trozzi, A.; Ragusa, S.,
The leaf volatile constituents of Isatis tinctoria by solid-phase microextraction and gas chromatography/mass spectrometry,
Planta Medica, 2006, 72, 10, 924-928, https://doi.org/10.1055/s-2006-946679
. [all data]
Solina, Baumgartner, et al., 2005
Solina, M.; Baumgartner, P.; Johnson, R.L.; Whitfield, F.B.,
Volatile aroma components of soy protein isolate and acid-hydrolysed vegetable protein,
Food Chem., 2005, 90, 4, 861-873, https://doi.org/10.1016/j.foodchem.2004.06.005
. [all data]
Flath, Light, et al., 1990
Flath, R.A.; Light, D.M.; Jang, E.B.; Mon, T.R.; John, J.O.,
Headspace Examination of Volatile Emissions from Ripening Papaya (Carica papaya L., Solo Variety),
J. Agric. Food Chem., 1990, 38, 4, 1060-1063, https://doi.org/10.1021/jf00094a032
. [all data]
Engel, Baty, et al., 2002
Engel, E.; Baty, C.; le Corre, D.; Souchon, I.; Martin, N.,
Flavor-active compounds potentially implicated in cooked cauliflower acceptance,
J. Agric. Food Chem., 2002, 50, 22, 6459-6467, https://doi.org/10.1021/jf025579u
. [all data]
Cho, Namgung, et al., 2008
Cho, I.H.; Namgung, H.-J.; Choi, H.-K.; Kim, Y.-S.,
Volatiles and key odorants in the pileus and stipe of pine-mushroom (Tricholoma matsutake Sing.),
Food Chem., 2008, 106, 1, 71-76, https://doi.org/10.1016/j.foodchem.2007.05.047
. [all data]
Cho, Choi, et al., 2006
Cho, I.H.; Choi, H.-K.; Kim, Y.-S.,
Difference in the volatile composition of pine-mushrooms (Tricholoma matsutake Sing.) according to their grades,
J. Agric. Food Chem., 2006, 54, 13, 4820-4825, https://doi.org/10.1021/jf0601416
. [all data]
Cha, Kim, et al., 1998
Cha, Y.J.; Kim, H.; Cadwallader, K.R.,
Aroma-active compounds in Kimchi during fermentation,
J. Agric. Food Chem., 1998, 46, 5, 1944-1953, https://doi.org/10.1021/jf9706991
. [all data]
Goeminne, Vandendriessche, et al., 2012
Goeminne, P.C.; Vandendriessche, T.; Van Eldere, J.; Nicolai, B.M.; Hertog, M.L.; Dupont, L.J.,
Detection of Pseudomonas aeruginosa in sputum headspace through volatile organic compound analysis,
Respiratory Res., 2012, 13, 87, 1-9. [all data]
Hansen, Buttery, et al., 1992
Hansen, M.; Buttery, R.G.; Stern, D.J.; Cantwell, M.I.; Ling, L.C.,
Broccoli storage under low-oxygen atmosphere: Identification of higher boiling volatiles,
J. Agric. Food Chem., 1992, 40, 5, 850-852, https://doi.org/10.1021/jf00017a029
. [all data]
Forney and Jordan, 1998
Forney, C.F.; Jordan, M.A.,
Induction of volatile compounds in broccoli by postharvest hot-water dips,
J. Agric. Food Chem., 1998, 46, 12, 5295-5301, https://doi.org/10.1021/jf980443a
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, IR Spectrum, 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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