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

Substance: acetone					Other Names: dimethyl ketone; propanone

Formula: C3H6O; CH3C(O)CH3				CAS-No.: 67-64-1

Study: photolysis; quantum yield

                
Authors: T. Gierczak, J.B. Burkholder, S. Bauerle, A.R. Ravishankara

Title: Photochemistry of acetone under tropospheric conditions

Journal/Source: Chem. Phys., 231, 229-244, (1998); doi:10.1016/S0301-0104(98)00006-8


Data: 

Energy/Wavelength range: 248 - 337 nm

Resolution: 

Temperature: 195 - 298 K

Temperature dependence: yes

Pressure/Concentration: 

Phase: gas

pH:


Comments: The quantum yield for the photodissociation of acetone was measured as a function of pressure at nine 
discrete wavelengths between 248 and 337 nm.
At wavelengths longer than 270 nm, the quantum yields were found to decrease with increasing pressure in accordance 
with the Stern–Volmer mechanism. The zero pressure quantum yield was found to increase as the wavelength decreased 
and reached a value of unity near 290 nm. The quantum yields at 308 nm were found to be nearly independent of temperature 
between 298 and 195 K.

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