science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: isoproturon Other names: 3-(4-isopropylphenyl)-1,1-dimethylurea Formula: C12H18N2O CAS-No.: 34123-59-6 Study: photodegradation, UV absorption spectrum Authors: M. Millet, W.-U. Palm, C. Zetzsch Title: Investigation of the photochemistry of urea herbicides (chlorotoluron and isoproturon) and quantum yields using polychromatic irradiation Journal/Source: Environ. Tox. Chem., 17, 258-264, (1998); DOI: 10.1002/etc.5620170217 Data: table, diagram Energy/Wavelength range: 200 - 290 nm Resolution: Temperature: 298 k Temperature dependence: no Pressure/Concentration: Phase: solution (water/0.5 % acetonitrile) pH: Comments: Chlorotoluron and isoproturon present very low molar extinction coefficients above 290 nm, and they can be assumed to be photostable with respect to direct irradiation by sunlight.