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

Substance: glycolaldehyde				Other Names: acetaldehyde, hydroxy-

Formula: C2H4O2						CAS-No.: 141-46-8

Study: uv absorption spectra, photolysis, quantum yields


Authors: C. Bacher, G.S. Tyndall, J.J. Orlando

Title: The atmosperic chemistry of glycolaldehyde

Journal/Source: J. Atmos. Chem., 39, 171-189, (2001); doi:10.1023/A:1010689706869


Data: table, diagram

Energy/Wavelength range: 205 - 335 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase: gas

pH:


Comments: The UV spectrum peaks at 277 nm with a maximum cross section of (5.5± 0.7) ×10-20 cm2 molecule-1. 
Studies of the ultraviolet photolysis of glycolaldehyde (lambda = 285 ± 25 nm) indicated that the overall quantum yield 
is > 0.5 in one bar of air, with the major products being CH2OH and HCO radicals.

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