science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: hydroxyacetone Other Names: acetol Formula: C3H6O2; CH3C(O)CH2OH CAS-No.: 116-09-6 Study: photolysis, UV absorption spectrum Authors: J.J. Orlando, G.S. Tyndall, J.-M. Fracheboud, E.G. Estupiña, S. Haberkorn, A. Zimmer Title: The rate and mechanism of the gas-phase oxidation of hydroxyacetone Journal/Source: Atmos. Env., 33, 1621-1629, (1999); doi:10.1016/S1352-2310(98)00386-0 Data: table, diagram Energy/Wavelength range: 235 - 340 nm Resolution: Temperature: 298 K Temperature dependence: Pressure/Concentration: Phase: gas pH: Comments: The spectrum is blue-shifted by about 15 nm relative to that of acetone and peaks at 266 nm, with a maximum absorption cross section of (6.7±0.6) ×10-20 cm2 molecule-1. The quantum yield for photolysis of hydroxyacetone in the region relevant to the troposphere (lambda>290 nm) was found to be significantly less than unity. Author to whom correspondence should be addressed: (e-mail address):