【CAS No.】: 21087-64-9

【CAS】: 4-Amino-6-tert-butyl-3-(methylthio)-1,2,4-triazin-5(4H)-one

【Molecular Formula】: C8H14N4OS

【Molecular weight】:214.3;

【Physical form】:White crystals, with a weak characteristic odour.

【Density】:1.28 (20 °C); Melting point:126.2 °C;

【Vapour pressure】:0.058 mPa (20 °C); Henry constant:1 ×10-5 Pa m3 mol-1 (20 °C, calc.);

【Partition coefficient(n-octanol and water)】:logP = 1.6 ( pH 5.6, 20 °C);

【Solubility】:In water 1.05 g/l (20 °C). In dimethylformamide 1780, cyclohexanone 1000, chloroform 850, acetone 820, methanol 450, dichloromethane 340, benzene 220, n-butanol 150, ethanol 190, toluene 87, xylene 90, isopropanol 77, hexane 1.0 (all in g/l, 20 °;

【Stability】:Relatively stable to u.v. irradiation. At 20 °C, stable to dilute acids and alkalis; DT50 (37 °C) 6.7 h ( pH 1.2); DT50 (70 °C) 569 h ( pH 4), 47 d;
【Toxicology】：Oral:Acute oral LD50 for rats c. 2000, mice c. 700, guinea pigs c. 250, cats >500 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >20 000 mg/kg. Not irritating to skin and eyes (rabbits). Inhalation: LC50 (4 h) for rats >0.65 mg/l air (dust). Phytotoxicity:Phytotoxic to many crops, including crucifers, cucurbits, lettuce, onions, sugar beet, sunflowers, flax, strawberries, sweet potatoes, and tobacco.

Herbicide