... )acetamide CAS RN [15972-60-8] PHYSICAL CHEMISTRY Composition ³93% pure. Mol. wt. 269.8 M.f. C14H20ClNO2 Form ... LC50 (96 h) for rainbow trout 1.8, bluegill sunfish 2.8, fathead minnow 5.0, channel catfish 2. ... Food Chem., 1989, 37, 1088; P. C. C. Feng et al., Drug Metab. Dispos., 1990, 18, 373). Plants Rapidly ... Persists in soil for c. 6-10 w (J. Tiedie et al., J. Agric. Food Chem., 1975, 23, 77; ...