science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: pyruvic acid					Other Names: propanoic acid, 2-oxo-

Formula: C3H4O3						CAS-No.: 127-17-3

Study: uv absorption cross sections


Authors: A. Horowitz, R. Meller, G.K. Moortgat

Title: The UV-VIS absorption cross sections of the alpha-dicarbonyl compounds: pyruvic acid, biacetyl and glyoxal

Journal/Source: J. Photochem. Photobiol. A: Chem., 146, 19-27, (2001); doi:10.1016/S1010-6030(01)00601-3   


Data: table, diagram

Energy/Wavelength range: 250 - 400 nm

Resolution: ~ 0.25 nm

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase: gas

pH:


Comments: The UV-VIS absorption cross sections of the alpha-dicarbonyl compounds, pyruvic acid and biacetyl (both at 298 K) and 
of glyoxal (at 295 K), were measured using a diode array detector. Comparison of the room temperature absorption spectrum of pyruvic 
acid, determined for the first time in this work, with data obtained at higher temperature reveals that at the lower temperature this spectrum 
is considerably shifted to the UV.

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