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

Substance: 2,3-pentanedione				Other Names: acetylpropionyl

Formula: C5H8O2; CH3C(O)C(O)C2H5			CAS-No.: 600-14-6

Study: photolysis, quantum yields, absorption cross sections

                
Authors: E. Szabó, M. Djehiche, M. Riva, C. Fittschen, P. Coddeville, D. Sarzynski, A. Tomas, S. Dóbé

Title: Atmospheric Chemistry of 2,3-Pentanedione: Photolysis and Reactions with OH Radicals

Journal/Source: J. Phys. Chem. A, 115 (33), 9160-9168, (2011); DOI: 10.1021/jp205595c

Data: table, diagram

Energy/Wavelength range: 210 450 nm

Resolution: ~ 0.4 nm

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase: gas

pH:


Comments: Absorption cross sections for 2,3-pentanedione were determined: the spectrum is characterized by two wide absorption 
bands between 220 and 450 nm. Pulsed laser photolysis at 351 nm was used and the depletion of 2,3-pentanedione (2) was measured 
by GC to determine the photolysis quantum yield of Phi(2) = 0.11 ± 0.02(2sigma) at 300 K and 1000 mbar synthetic air.

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