Pyrazosulfuron-ethyl CAS NO.93697-74-6

1. Names and Structures (1.)Chinese common name: Bi Mi Huang Long (2.)English common name: PYRAZOSULFURON-ETHYL (3.)Chemical name: ethyl 5-(4,6-dim…

1. Names and Structures (1.)Chinese common name: Bi Mi Huang Long (2.)English common name: PYRAZOSULFURON-ETHYL (3.)Chemical name: ethyl 5-(4,6-dimethoxypyrimidin-2-ylcarbamoyl sulfamoyl)- 1-methylpyrazole-4-carboxylate (4.)Structural formula: (5.)Molecular formula: C12H14N6O7S (6.)Molecular weight: 414.4 2. Physical and chemical properties Technical grade: off white crystal,special gravity:1.44(20),melting point:181-182, steam pressure :0.0147mPa(20); solubility(20) in water, normal hexane, chloroform, benzene, acetone respectively :1.45*10-2g/l,0.2g/l,234.4g/l,15.6g/l,31.7g/l. Content of valid ingredient is not less than 98%. 3. Toxicology Acute oral LD50 for rats>5000mg/kg . Acute percutaneous LD50 for rabbits >2000mg/kg . LC50 for rats>3.9mg/L air. Not a skin irritant or eye irritant(rabbits) 4. Application Control of grasses in wet-sown and transplanted rice crop ,such as cockspur grass,needle spikerush,water nutgrass,smallflower umbrellaplant, monochoria, narowleaf oriental water plantain,oriental water plantain, pondweed, threesquare grass,common ducksmeat,duckweed,bur beggartick, stoneworts, water dropwort 5. Product specification: 95%TECH, 10%WP Item pyrazosulfuron-ethyl 95% Tech pyrazosulfuron-ethyl 10% WP Appearance white powder white powder content % 95.0 10.0 Moisture % 0.5 Suspensibility % 70 PH value 5.0-8.0 Wetting time, S 90s Fineness 96.0 6. Packing: 95%TECH and WDG: 25kg fibre drum 25%WP: 25kg PP woven bag