C2H5CHO (298K and 1 bar) photolysis quantum yields (C2H5 + HCO) Chen and Zhu J. Phys. Chem. A., 105, 9689 (2001) see also discussion from IUPAC 2003 http://www.iupac-kinetic.ch.cam.ac.uk wavelength (nm) qy_hco 280 0.85 285 1.01 290 0.95 295 0.98 300 0.92 305 0.95 310 0.98 315 0.04 320 0.028 325 0.021 330 0.023