Package: 25kg/drum ,200L/drum

Uses : rice herbicides

Molecular Structure:

Product description: Synonyms: sodium 2,6-bis(4,6-dimethoxypyrimidin-2-yloxy)benzoate (IUPAC); 'Grass-short' (Kumiai); 'Ectran' (IPESA); 'Nominee' (Bayer CropScience, Kumiai); 'Paladin' (Baocheng); 'Short-keep' (Riken Green); 'Sunbishi' (Sundat). 'Regiment' (Kumiai, Valent); 'Velocity' (Valent) CAS No.: 125401-75-4 Molecular Weight: 452.35507 Molecular Formula: C19H17N4NaO8 Structural Formula: Form White: odourless powder. M.p. 223–224 °C V.p. 5.05 × 10-6 mPa (25 °C) Kow logP = –1.03 (23 °C) Henry 3 × 10-11 Pa m3 mol-1 (calc.) S.g./density 1.47 Solubility In water 68.7 g/l (20 °C, distilled water). In methanol 25 g/l (20 °C); in ethyl acetate 6.1 × 10-2, n-hexane 8.34 × 10-3, acetone 1.4, toluene <1.0 × 10-6, dichloromethane 1.3 (all in mg/l, 25 °C). Stability Decomposes at 223 °C. Hydrolysis DT50 >1 y (pH 7 and 9, 25 °C), 88 d (pH 4, 25 °C). Aqueous photolysis DT50 42 d in natural water, 499 d in distilled water (both 25 °C, 1.53 W/m2, 260–365 nm). pKa 3.35 (20 °C) Application A selective, systemic post-emergence herbicide, absorbed by foliage and roots. By inhabiting branched chain amino acid synthesis, bispyribac sodium is used to control grasses, sedges and broad-leaved weeds, especially Echinochloa spp., in direct-seeded rice, at rates of 15–45 g/ha. Also used to stunt growth of weeds in non-crop situations.