Chemical Name: 5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-one

Formula: C₁₅H₁₈Cl₂N₂O₃

Molecular weight: 249.11

CAS No.: 19666-30-9

Appearance: white crystal without odour.

Melting Point: 91-94°C.

Vapour Pressure: 0.0133 m Pa at 20°C.

Stability: Solubility in water 0.7mg/L, and in methyl or ethyl is 100g/l; in cyclohexane is 200g/l; in acetone is 600g/l;in benzene, chloroform, dimethyl benzene is 1000g/l.

Toxicity: Oral LD₅₀ 8000 mg/kg, dermal LD₅₀ ( rabbits) is greater than 8000 mg/kg, acute in halation LC₅₀>200mg/l. Subacute toxicity (rat): no effect level is 1000mg/kg/d, Chronic toxicity to rat no effect level is 25mg/kg/d; dog is 15mg/kg/d.

Specification: 95%TC,12%EC,25%EC.

Uses: Oxadiazon is a selective, peremergent herbicide for control of many annual grasses and broadleaf weeds in turf and on a wide variety of woody ornamental shrubs, vines and trees. It controls weeds by killin the young weed seedlings as they come in contact with herbicide during germination.