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Bispyribac-sodiu
NOMENCLATURE Common name bispyribac (BSI, E-ISO, (m) F-ISO, for the carboxylic acid) IUPAC name sodium 2,6-bis(4,6-dimethoxypyrimidin-2-yloxy)benzoate Chemical Abstracts name sodium 2,6-bis[(4,6-dimethoxy-2-pyrimidinyl)oxy]benzoate CAS RN [125401–75–4]acid; [125401–92–5] sodium salt
PHYSICAL CHEMISTRY Composition Tech. is >93%. Mol. wt. 452.4 M.f. C19H17N4NaO8; C19H18N4O8 (acid) 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.


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