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Substance: acetic acid				Other Names: ethanoic acid

Formula: CH3COOH				CAS-No.: 64-19-7

Study: nir absorption cross sections


Authors: I. Begashaw, M. N. Fiddler, S. Bililign, S. S. Brown

Title: Measurement of the Fourth O-H Overtone Absorption Cross Section in Acetic Acid Using Cavity Ring-Down Spectroscopy

Journal/Source: J. Phys. Chem. A, 115 (5), 753-761, (2011); DOI: 10.1021/jp1087338


Data: table, diagram

Energy/Wavelength range: 607 - 625 nm

Resolution: 0.05 nm; 0.2 nm (average cross section)

Temperature: 

Temperature dependence: 

Pressure/Concentration: 

Phase:

pH:


Comments: The absolute absorption cross sections of the fourth vibrational O-H (5vOH) overtone in acetic acid is reported.
The absorption of acetic acid monomer peaks at ~615 nm and has a peak cross section of 1.84 x 10-24 cm2 molecule-1. 
Between 612 and 620 nm, the integrated cross section for the acetic acid monomer is (5.23 ± 0.73) x 10-24 cm2 nm molecule-1 
or (1.38 ± 0.19) x 10-22 cm2 molecule-1 cm-1.

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