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: UV absorption spectrum, fluorescence, phosphorescence

                
Authors: A.W. Jackson, A.J. Yarwood 

Title: Fluorescence and Phosphorescence of 2,3-Pentanedione

Journal/Source: Can. J. Chem., 50 (9), 1331-1337, (1972); doi: 10.1139/v72-209


Data: table, diagram

Energy/Wavelength range: 200 - 470 nm

Resolution: 

Temperature: 297 K

Temperature dependence: no

Pressure/Concentration: 

Phase: gas

pH:


Comments: The spectrum consists of two systems. The system at shorter wavelengths extends from less than 220 nm to
greater than 320 nm with a maximum at 253 nm (epsilon = 31.5 M-1cm-1). The only structure observed is a shoulder at 280 nm. 
The longer wavelength system extends from less than 340 nm to greater than 465 nm. Some structure is observed in the system 
and no absorption is detected at wavelengths longer than 480 nm.

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