Ethyl hydrogen phosphonate; Phosphonic acid monoethyl ester; Fosetyl-l

Ethyl hydrogen phosphonate

C₂H₇O₃P

Form White to yellowish powder). Melting point 215℃. Solubility In water 111.3 g/l (pH 6, 20℃). In methanol 920, acetone 13, ethyl acetate <1 (all in mg/l, 20℃).

Oral Acute oral LD50 for rats >7080 mg/kg. Skin and eye Acute percutaneous LD50 for rats and rabbits >2000 mg/kg. Non-irritating to skin. Inhalation LC50 (4 h) for rats >5.11 mg/l air.

Control of diseases caused by e.g. Phytophthora, Pythium, Plasmopara, Bremia spp., etc. on a variety of crops including vines, fruit (citrus, pineapples, avocados, stone fruit and pome fruit), berries, vegetables, hops, ornamentals and turf. Also useful activity against several bacterial plant pathogens.

Description: White crystalline solid, free from visible extraneous matter; Active Ingredient Content(w/w): ≥95%; Loss on Drying(w/w): ≤1.0%; Phosphite(as phosphorous acid aluminum): ≤1.0%