Solubility In water 5700 (pH 5.0), 7300 (pH 9.2) (both mg/l, 20 °C) . In acetone 51.0, methanol 34.6, ethyl acetate 10.6, isopropanol 9.2, dichloromethane 0.1, toluene 0.8, xylene 0.3 (all in g/l, 20 °C).
Stability Stable in acidic media. Fluroxypyr is acidic, and reacts with alkalis to form salts. DT50 in water 185 d (pH 9, 20 °C). Stable at temperatures up to melting point. Stable in visible light.
Mode of Action:
Fluroxypyr is applied as fluroxypyr-meptyl. After predominantly foliar uptake, the ester is hydrolysed to the parent acid, which is the herbicidally active form, and translocated rapidly to other parts of the plants. Acts by inducing characteristic auxin-type responses, e.g. leaf curling.
Oral Acute oral LD50 for rats 2405 mg/kg.
Skin and eye Acute percutaneous LD50 for rabbits >5000 mg/kg. Mild eye irritant; non-irritating to skin (rabbits). Inhalation LC50 (4 h) for rats >0.296 mg/l air.
Product name: Fluroxypyr 250g/L EC
Light yellow Liquid
Content of a.i.
(as 0.5% aqueous solution)
Stability at 0°C
The volume of solid and/or liquid which separates shall not be more than 0.3 ml.
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