In database:

510-6500 cm-1

113-184.2 nm

202-365 nm

Acetaldehyde (CH₃CHO)
Molecular weight 44.053 amu
Freezing point -123.5 C
Boiling point 20.1 C

Infrared cross-sections from PNNL
FTIR infrared cross-sections from 510 to 6500 cm^-1
Data available at 5 C, 25 C, and 50 C
Spectra is composite of on the order of 10 different pressures, backfilled with nitrogen to 760 T.
Images of PNNL data in cm²/molecule vs. wavenumbers
Images of PNNL data in cm²/molecule vs. microns

UV cross-sections
Please see The MPI-Mainz UV/VIS Spectral Atlas
Image of data from 118 to 184 nm (P. Limão-Vieira et al, Chem. Phys. Lett. 376:737-747 (2003)

Additional References
The Third and Fourth Torsional States of Acetaldehyde; I. Kleiner, J.T. Hougen, J.-U. Grabow, S.P. Belov, M. Yu. Tretyakov, and J. Cosleou; J. Mol. Spec. 179:41-60 (1996).

The Fundamental n₁₄ Band of Acetaldehyde; I. Kleiner and M. Herman; J.Mol.Spec. 167:300-313 (1994).

The Second Torsional State of Acetaldehyde; S.P. Belov, M. Yu. Tretyakov, I. Kleiner, and J.T. Hougen; J.Mol.Spec. 160:61-72 (1993).

The Ground and First Torsional States of Acetaldehyde; I. Kleiner, J.T. Hougen, R.D. Suenram, F.J. Lovas, and M. Godefroid; J.Mol.Spec. 153:578-586 (1992).

Notes
Fundamental frequencies from NIST Chemistry Webbook
n₁ 3005 cm^-1 (a') CH₃ d-stretch
n₂ 2917 cm^-1 (a') CH₃ s-stretch
n₃ 2822 cm^-1 (a') CH stretch
n₄ 1743 cm^-1 (a') CO stretch
n₅ 1441 cm^-1 (a') CH₃ d-deform
n₆ 1400 cm^-1 (a') CH bend
n₇ 1352 cm^-1 (a') CH₃ s-deform
n₈ 1113 cm^-1 (a') CC stretch
n₉ 919 cm^-1 (a') CH₃ rock
n₁₀ 509 cm^-1 (a') CCO deform
n₁₁ 2967 cm^-1 (a) CH₃ d-stretch
n₁₂ 1420 cm^-1 (a) CH₃ d-deform
n₁₃ 867 cm^-1 (a) CH₃ rock
n₁₄ 763 cm^-1 (a) CH bend
n₁₅ 180 cm^-1 (a) torsion



List of available data for all molecules in database
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