science-softCon uv/vis spectra data base;	www.uv-spectra.de; (C) science-softCon 2008

Substance: propionic acid			Other Names: propanoic acid

Formula: 	C2H5COOH			CAS-No.: 79-09-4

Study: photolysis, quantum yields, absorption cross sections


Authors: D. L. Singleton, G. Paraskevopoulos, R. S. Irwin

Title: Laser photolysis of carboxylic acids in the gas phase: direct determination of the hydroxyl quantum yield at 222 nm

Journal/Source: J. Phys. Chem., 94, 695-699, (1990); DOI: 10.1021/j100365a034


Data: (diagram, table, disk): 

Energy/Wavelength range: 222 nm

Resolution: 

Temperature: 298 K; 356.2 K

Temperature dependence: 

Pressure: 

Comments: The primary quantum yields for formation of OH radicals in the photolysis of the monomer and dimer of formic, acetic,
and propionic acid vapor at 222 nm have been determined at 298 K and 356.2 K..
The OH quantum yields from the monomers were found to be: formic acid (0.70-0.80); acetic acid (0.55-0.70); propionic acid (0.15-0.35).
The absorption cross sections were determined at 222 nm for both temperatures.

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