Detailed Oxasulfuron Description:
Features Specifications: Oxasulfuron Bispyribac sodium Tribenuron methyl Diclofop methyl: Mol. wt. 406.4 M.f. C17H18N4O6S Form White, odourless powder. M.p. 158 °C (decomp.) V.p. <2 ´ 10-3 mPa (25 °C) KOW logP = 0.75 (pH 5), -0.81 (pH 7), -2.2 (pH 8.9) Henry <3.2 ´ 10-5 Pa m3 mol-1 (calc.) S.g./density 1.41 Solubility In water 52 ppm (pH 5.1, 25 °C); in buffer, 63 (pH 5.0), 1700 (pH 6.8), 19 000 (pH 7.8) mg/l (15 °C). In methanol 1500, acetone 9300, toluene 320, n-octanol 99, n-hexane 2.2, ethyl acetate 2300, dichloromethane 6900 (all in mg/l, 25 °C). pKa 5.1.
Biochemistry Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acids valine and isoleucine, hence stopping cell division and plant growth. Selectivity derives from rapid metabolism in the crop. Metabolic basis of selectivity in sulfonylureas reviewed (M. K. Koeppe & H. M. Brown, Agro-Food-Industry, 6, 9-14 (1995)). Mode of action Readily taken up by shoots and roots and translocated to meristematic tissues. Leaves turn yellow or red, followed by death after 1 to 3 weeks. Uses Under development for broad-leaved and grass weed control in soya beans, at 60-90 g/ha. Formulation types WG. Selected tradenames: 'Chart' (Syngenta); 'Dynam' (Syngenta); 'Expert' (Syngenta)
- Products ID: 100
- Product Category: Herbicides
- Post date: Jun 8, 2008
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