Pentanoic acid, 4-methyl-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Phase change data

Go To: Top, 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil472. ± 3.KAVGN/AAverage of 14 out of 15 values; Individual data points

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
91.7354.AStephenson and Malanowski, 1987Based on data from 339. to 481. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
369.1 to 406.33.09143926.574-181.221Kahlbaum, 1894Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Gas Chromatography

Go To: Top, Phase change data, 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, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-1937.Place, Imhof, et al., 200360. m/0.32 mm/1. μm, He; Program: 35C(5min) => 10C/min => 45C (5min) => 5C/min => 250C (10min)
CapillaryDB-5949.Beal and Mottram, 199430. m/0.32 mm/1.0 μm, He; Program: 5 0C (0.5 min) -> (1 min) 60 0C (5 min) 4 0C/min -> 250 0C

Van Den Dool and Kratz RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-Wax1800.Malliaa, Fernandez-Garcia, et al., 200560. m/0.32 mm/1. μm, He, 45. C @ 1. min, 5. K/min, 250. C @ 12. min

Van Den Dool and Kratz RI, polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryFFAP1817.Yasuhara, 198750. m/0.25 mm/0.25 μm, He; Program: 20C (5min) => 2C/min => 70C => 4C/min => 210C

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryCP-Sil 5 CB921.Collin, Nizet, et al., 201250. m/0.32 mm/1.20 μm, Nitrogen; Program: 36 0C 20 0C/min -> 85 0C 1 0C/min -> 145 0C 3 0C/min -> 250 0C (30 min)
CapillarySPB-5935.Begnaud, Pérès, et al., 200360. m/0.32 mm/1. μm; Program: not specified
CapillaryDB-5 MS955.Luo and Agnew, 200130. m/0.25 mm/1.0 μm, Helium; Program: not specified

Normal alkane RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryCP-Wax 52CB1774.Audino, Alzogaray, et al., 2007He, 50. C @ 2. min, 6. K/min, 220. C @ 20. min; Column length: 30. m; Phase thickness: 0.32 μm
CapillaryDB-Wax1820.Fan and Qian, 200630. m/0.32 mm/0.25 μm, He, 40. C @ 2. min, 4. K/min, 230. C @ 15. min
CapillaryDB-Wax1824.Fan and Qian, 2006, 230. m/0.32 mm/0.25 μm, N2, 40. C @ 2. min, 6. K/min, 230. C @ 15. min
CapillaryDB-Wax1813.Dregus and Engel, 200360. m/0.32 mm/0.25 μm, H2, 40. C @ 5. min, 4. K/min, 230. C @ 25. min
CapillaryTC-Wax1803.Suhardi, Suzuki, et al., 200260. m/0.25 mm/0.25 μm, He, 40. C @ 10. min, 3. K/min, 230. C @ 10. min

Normal alkane RI, polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryEC-10001795.Delabre and Bendall, 9999Program: not specified
CapillaryDB-Wax1809.Krings, Zelena, et al., 200630. m/0.32 mm/0.25 μm, He; Program: 45C(5min) => 5C/min => 150C => 10C/min => 240C (10min)

References

Go To: Top, Phase change data, Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

Kahlbaum, 1894
Kahlbaum, G.W.A., Studien uber Dampfspannkraftsmessungen, Z. Phys. Chem. (Leipzig), 1894, 13, 14-55. [all data]

Place, Imhof, et al., 2003
Place, R.B.; Imhof, M.; Teuber, M.; Olivier Bosset, J., Distribution of the volatile (flavour) compounds in Raclette cheese produced with different staphylococci in the smear, Mitt. Lebensmittelunters. Hyg., 2003, 94, 192-211. [all data]

Beal and Mottram, 1994
Beal, A.D.; Mottram, D.S., Compounds contributing to the characteristic aroma of malted barley, J. Agric. Food Chem., 1994, 42, 12, 2880-2884, https://doi.org/10.1021/jf00048a043 . [all data]

Malliaa, Fernandez-Garcia, et al., 2005
Malliaa, S.; Fernandez-Garcia, E.; Bosset, J.O., Comparison of purge and trap and solid phase microextraction techniques for studying the volatile aroma compounds of three European PDO hard cheeses, Int. Dairy J., 2005, 15, 6-9, 741-758, https://doi.org/10.1016/j.idairyj.2004.11.007 . [all data]

Yasuhara, 1987
Yasuhara, A., Identification of Volatile Compounds in Poultry Manure by Gas Chromatography-Mass Spectrometry, J. Chromatogr., 1987, 387, 371-378, https://doi.org/10.1016/S0021-9673(01)94539-X . [all data]

Collin, Nizet, et al., 2012
Collin, S.; Nizet, S.; Gros, J., Le houblonnage a cru des bieres speciales belges est bien plus qu'une simple dissolution des composes aromatiques du houblon (in Flamish), Cerevisia, 2012, 36, 4, 119-124, https://doi.org/10.1016/j.cervis.2011.12.001 . [all data]

Begnaud, Pérès, et al., 2003
Begnaud, F.; Pérès, C.; Berdagué, J.-L., Characterization of volatile effluents of livestock buildings by solid-phase microextraction, Int. J. Environ. Anal. Chem., 2003, 83, 10, 837-849, https://doi.org/10.1080/03067310310001603349 . [all data]

Luo and Agnew, 2001
Luo, J.; Agnew, M.P., Gas characteristics before and after biofiltration treating odorous emissions from animal rendering processes, Environ. Technol., 2001, 22, 9, 1091-1103, https://doi.org/10.1080/09593332208618220 . [all data]

Audino, Alzogaray, et al., 2007
Audino, P.G.; Alzogaray, R.A.; Vassena, C.; Masuh, H.; Fontán, A.; Gatti, P.; Martínez, A.; Camps, F.; Cork, A.; Zerba, E., Volatile compounds secreted by Brindley's glands of adult Triatoma infestans: identification and biological activity of previously unidentified compounds, Journal of Vector Ecology, 2007, 32, 1, 75-82, https://doi.org/10.3376/1081-1710(2007)32[75:VCSBBO]2.0.CO;2 . [all data]

Fan and Qian, 2006
Fan, W.; Qian, M.C., Characterization of Aroma Compounds of Chinese Wuliangye and Jiannanchun Liquors by Aroma Extract Dilution Analysis, J. Agric. Food Chem., 2006, 54, 7, 2695-2704, https://doi.org/10.1021/jf052635t . [all data]

Fan and Qian, 2006, 2
Fan, W.; Qian, M.C., Identification of aroma compounds in Chinese 'Yanghe Daqu' liquor by normal phase chromatography fractionation followed by gas chromatography/olfactometry, Flavour Fragr. J., 2006, 21, 2, 333-342, https://doi.org/10.1002/ffj.1621 . [all data]

Dregus and Engel, 2003
Dregus, M.; Engel, K.-H., Volatile constituents of uncooked Rhubarb (Rheum rhabarbarum L.) stalks, J. Agric. Food Chem., 2003, 51, 22, 6530-6536, https://doi.org/10.1021/jf030399l . [all data]

Suhardi, Suzuki, et al., 2002
Suhardi, S.; Suzuki, M.; Yoshida, K.; Muto, T.; Fujita, A.; Watanbe, N., Changes in the volatile compounds and in the chemical and physical properties of snake fruit (Salacca edulis Reinw) Cv. Pondoh during maturation, J. Agric. Food Chem., 2002, 50, 26, 7627-7633, https://doi.org/10.1021/jf020620e . [all data]

Delabre and Bendall, 9999
Delabre, M.-L.; Bendall, J.F., Flavour ingredients from fermented dairy streams, Expression of Multidisciplinary Flavour Sci., 9999, 375-378. [all data]

Krings, Zelena, et al., 2006
Krings, U.; Zelena, K.; Wu, S.; Berger, R.G., Thin-layer high-vacuum distillation to isolate volatile flavour compounds of cocoa powder, Eur. Food Res. Technol., 2006, 223, 5, 675-681, https://doi.org/10.1007/s00217-006-0252-x . [all data]


Notes

Go To: Top, Phase change data, Gas Chromatography, References