Pyrazosulfuron-ethyl
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Common name: Pyrazosulfuron-ethyl
Chemical name: 5-[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-1-methylpyrazole-4-carboxylic acid
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Physical and chemical properties:
Pure product is a colourless crystals,m.p.181-182℃,solubility in water is 0.0145 g/l (20℃),in methan-
-ol 0.7,hexane 0.2,benzene 15.6,cjloroform 234.4, acetone 31.7( all in g/l, 20℃).stable at 50℃ for
6 months. Relatively stable at pH 7. unstable in acidic or alkaline media.
Toxicity:Acute oral LD50 to rats>5000mg/kg.Acute dermal LD50 for rats>2000 mg/kg.Non-
-irritating to skin and eyes(rabbits).
Formulation and specification:
|
Item |
Tech |
10WP |
|
pyrazosulfuron-ethyl content ,%(m/m) |
95.0 min |
10.0 min |
|
Moisture ,%(m/m) |
0.3 max |
0.5 max |
|
Acidity(as H2SO4), %(m/m) |
0.3 max |
0.3 max |
Packing: 200kgs/drum for Tech; 500gs/bag for WP.
Uses:Control of annual and pernnial broad-leaved weeds,sedges,and barnyard grass pre-emergence in directly-sown and transplanted rice crops.
