herbicide nicosulfuron 95%TC CAS No.:111991-09-4 asulam 95%TC 80%WDG 400G/L SL CAS No.:3337-71-1 herbicides CAS NO.111991-09-4

Structure:

410.4

Technical can be recognized as white powder or colorless crystals.Water Solubility: @ 25 degrees C: 0.04 g/100g pH=5.0; 1.2 g/100g pH=7.0; 3.9 g/100g pH=9.0.Solubility in Other Solvents: @ 25 degrees C: 0.04 g/100g pH=5.0; 1.2 g/100g pH=7.0; 3.9 g/100g pH=9.0.Melting Point: 141-144 degrees C.Vapor Pressure: 1.2 x 10 to the minus 16 torr at 25 degrees C.

The acute oral LD50 for technical nicosulfuron was reported to be >5,000 mg/kg body weight. The acute dermal LD50 was >2,000 mg/kg body weight. The acute inhalation LC50 was >5.9 mg/L. Primary dermal irritation testing showed nicosulfuron to be a non-irritant and a non-sensitizer. The primary eye irritation testing showed nicosulfuron to be a moderate irritant.

Nicosulfuron is a member of the sulfonylurea family of herbicides. It controls weeds by inhibiting the plant enzyme acetolactate synthase, or ALS. This enzyme is not found in livestock, fish or man. Inhibiting the ALS enzyme system blocks the production of the amino acids, valine and isoleucine, essential building blocks of proteins and other plant components.