Common Name: Pyrazosulfuron-ethyl
Type of formulation: 98%TC,10%WP,20%WP
CAS Registry Number 93697-74-6
Properties: Pyrazosulfuron is crystal, Melting point 181182,
Density(d20)1.44, Vapour pressure0.0147mPa(20).
Solubility0): Water 14.5mg/l, acetone 31.7g/l, chloroform 234G/l, hexane 0.2g/l, methanol 0.7g/l.
Stability: 50, o. 5 year.
Uses: Controls annual, perennial broadleaf weeds, and sedges in direct-seeded and transplanted paddy rice
Toxicity: (Rat): Oral LD50 >5000 mg/kg; Dermal >2000 mg/kg
Type of formulation: 95% Tech 10% 20% WP
Physical & Chemical Properties
Appearance: White powder
Molecular Weight: 414.39 g/mol
Solubility: Water 14.5mg/l, acetone 31.7g/l,
Cloroform 234G/l, hexane 0.2g/l, methanol 0.7g/l.
Density: 1.440 g/cm3 at 20 ° C (68 ° F)
Melting Point: 181 - 182 ° C
Boiling Point: No data available
Flash Point: > 170.00 ° C (> 338.00 ° F) - closed cup
Toxicity
Acute toxicity
LD50 Oral - rat - > 5, 000 mg/kg
LD50 Dermal - rat - > 2, 000 mg/kg
Skin corrosion/irritation
Skin - rabbit - No skin irritation
Serious eye damage/eye irritation
Eyes - rabbit - No eye irritation
Application
Control of annual and perennial broad-leaved weeds and sedges, pre-or post-emergence in wet-sown and transplanted rice crops, at 15-30 g/ha.
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