Fosetyl aluminum

Chemical properties

White, crystalline solid or powder. Odorless.

The Uses of Fosetyl aluminum

Fosetyl Aluminum is a fungicide. It is highly inhibitory in vitro against several species of Phytophthora.

The Uses of Fosetyl aluminum

Agricultural fungicide.

The Uses of Fosetyl aluminum

Fosetyl-aluminium (fosetyl-Al) is a systemic fungicide effective in controlling various Phycomycete diseases, in particular the downy mildews, Phyfophfhora and Pythium spp. It has also shown useful activity against several bacterial plant pathogens (e.g. Erwinia amylovara). It is widely used on a variety of crops including vines, fruit (bananas, citrus, pineapples, avocados, stone fruit and pome fruit), berries, vegetables, hops, ornamentals and turf.

Agricultural Uses

Fosetyl aluminum can be used as Fungicide: used on fruits, vegetables and nut crops; also on ornamentals and greenhouse products.

Trade name

32545 R®; ALIETTE®; ALIETTE® 80 WG; CHIPCO® ALIETTE WDG; EFOSITE-AL®; EFOSITE ALUMINUM®; EPAL®; LS-74783®; MIKAL®

Potential Exposure

Organophosphate fungicide used on fruits, vegetables and nut crops; also on ornamentals and greenhouse products.

Environmental Fate

Plant. Felsot and Pedersen (1991) reported that fosetyl-aluminum degrades in plants forming phosphonic acid which ionizes to the dianion phosphonate, HPO3–2.

Metabolic pathway

Fosetyl-Al undergoes rapid and extensive degradation and metabolism in soil, plants and animals. Cleavage of the P-O-ethyl linkage yielded phosphorous acid, ethanol and naturally incorporated components as the terminal products (Scheme 1).

Shipping

UN2783 Organophosphorus pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3018 Organophosphorus pesticides, liquid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Degradation

Aqueous solutions of fosetyl-Al undergo rapid degradation in strong acidic and alkaline conditions (1) with observed DT₅₀ values of 5 days (pH 3) to 13 days (pH 13) but exhibit higher stability at pH values closer to neutrality (Bertrand et al., 1981). However, the results of biodegradability studies suggest that fosetyl-Al is readily biodegradable in environmental water (Mead, 1996).

Incompatibilities

In the presence of strong reducing agents such as hydrides, organophosphates form highly toxic and flammable phosphine gas. Contact with oxidizers can cause the release of toxic oxides of phosphorus. Decomposes in temperatures above 260℃.

Waste Disposal

Destruction by alkali hydroly sis or incineration. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by con tacting your regional EPA office.