Metribuzin CAS:21087-64-9 CAS NO.21087-64-9

Product Name

Metribuzin

Function

Herbicide

Specification

95%Tech, 70%WP, 70%WDG, 480 g/l SC

Chemical Name

4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one 

CAS No.

21087-64-9

Empirical Formula

C8H14N4OS

Toxicology

Oral Acute oral LD50 for male rats 510, female rats 322, mice c. 700, guinea pigs c. 250, cats >500 mg/kg. 

Skin and eye Acute percutaneous LD50 for rats >20 000 mg/kg.

Inhalation LC50 (4 h) for rats >0.65 mg/l air (dust). 

NOEL (2 y) for rats and dogs 100, mice c. 800 mg/kg diet.

Toxicity class WHO (a.i.) II; EPA (formulation) III 

Applications

Mode of action Selective systemic herbicide, absorbed predominantly by the roots, but also by the leaves, with translocation acropetally in the xylem.  Uses Pre- and post-emergence control of many grasses and broad-leaved weeds in soya beans, potatoes, tomatoes, sugar cane, alfalfa, asparagus, maize and cereals, at 0.07-1.45 kg/ha. PhytotoxicityPhytotoxic to many crops, including crucifers, cucurbits, lettuce, onions, sugar beet, sunflowers, flax, strawberries, sweet potatoes, and tobacco.