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

Substance: sulfur dioxide				Other Names: 

Formula: SO2						CAS-No.: 7446-09-5

Study: uv absorption spectrum, photolysis, quantum yields


Authors: N. Kelly, J.F. Meagher, J. Heicklen

Title: The Photolysis of Sulfur Dioxide in the Presence of Foreign Gases. VIII: Excitation of SO2 at 3600-4100 A in the Presence of Acetylene

Journal/Source: J. Photochem., 6, 157-172, (1976/77); http://dx.doi.org/10.1016/0047-2670(76)85061-7


Data: diagram, table

Energy/Wavelength range: 338 - 400 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration:  

Phase: gas

pH:


Comments: SO2 was photolyzed at 25°C with a band of radiation from 3600 to 4100Å in the presence of acetylene. The quantum yield of 
the sole gas phase product, CO, was determined for a wide range of SO2 and C2H2 pressures and in the presence of CO2, NO, and H2O. 
For all SO2 pressures used, Phi(CO) increases with (C2H2) to an upper limiting value of 0.190.

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