Tebutam 牧草胺

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CAS号: 35256-85-0
英文名称: Tebutam
其他名称:Butam; GPC-5544;
分子式: C15H23NO
分子量: 233.35

理化性质:浅棕色液体,沸点95-97℃/0.1 mmHg,相对密度0.975 (20 ℃)。在水中溶解度0.79 g/l (pH 7, 20 ℃).,在有机溶剂如丙酮、己烷、甲醇、甲苯、氯仿中溶解度>500 g/l, (25 ℃).。正常储存条件下稳定,对光稳定。

毒性:大白鼠经口LD506210mg/kg,豚鼠经口LD502025mg/kg,大鼠和白兔经皮LD50 >2000 mg/kg,对兔皮肤和眼睛有轻微刺激。对野鸭和鹌鹑LC50 >5000 mg/kg.(8天),虹鳟LC50 (96 h)23 mg/l.,蓝鳃翻车鱼19 mg/l.,蜜蜂经口LD50 100 μg/只。



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Superseded record no. 1415


CAS RN [35256-85-0]. Herbicide reported by R. A. Schwartzbeck (Proc. Br. Crop Prot. Conf. - Weeds, 1976, 2, 739). Introduced by Gulf Oil Chemicals Co. and later acquired by Dr R. Maag, Ltd (became Syngenta AG). Common names tebutam (BSI, draft E-ISO); tébutame ((m ) draft F-ISO); butam (ANSI, WSSA); no name (Japan) IUPAC name N-benzyl-N-isopropylpivalamide CA name 2,2-dimethyl-N -(1-methylethyl)-N -(phenylmethyl)propanamide. Development codes GPC-5544 (Gulf); Ro 14-9480/000 (Roche); CGA 39625 (Ciba-Geigy) M.f. C15H23NO Mol. wt. 233.4 Form Light brown liquid. B.p. 95-97 ºC/0.1 mmHg V.p. c. 89 mPa (25 ºC) KOW logP = 3 Henry 1.5 ´ 10-2 Pa m3 mol-1 (calc.) S.g./density 0.975 (20 ºC) Solubility In water 0.79 g/l (pH 7, 20 ºC). Readily soluble in organic solvents, e.g. acetone, hexane, methanol, toluene, chloroform >500 g/l (25 ºC). Stability Chemically stable under normal storage conditions. Thermally stable at temperatures below the boiling point. Stable to light. Stable to hydrolysis at pH 5, 7 and 9 (all at 25 ºC). F.p. >80 ºC (with 2% toluene)
Biochemistry Microtubule assembly inhibition. Mode of action Selective herbicide, acting by inhibition of weed germination and also through root uptake. Uses Pre-emergence control of annual grasses, volunteer cereals and broad-leaved weeds in oilseed rape and brassicas, at 2.8-3.6 kg/ha. Phytotoxicity A large number of crops are susceptible, including cereals, maize, carrots, flax, onions, garlic, lettuce, melons, sorghum, spinach, and sugar beet. Formulation types EC. Products 'Colzor' * (Novartis); 'Comodor' * (Novartis) . Details PM12, Entry 728.