fosetyl-aluminium

95%tech, 80%wp,

Fungicide

NOMENCLATURE

fosetyl-aluminium

Common name fosetyl-aluminium

Other names efosite-Al* (rejected common name proposal); EPAL  CAS RN [39148-24-8]  EEC no. 254-320-2  Development codes LS 74 783; RP 32545 (both Rhône-Poulenc) 

fosetyl

Common name fosetyl (BSI, draft E-ISO, (m) draft F-ISO (since 1984)); phosethyl* ((m) draft F-ISO (before 1984))

IUPAC name ethyl hydrogen phosphonate 

Chemical Abstracts name ethyl hydrogen phosphonate 

Other names efosite* (rejected common name proposal)  CAS RN [15845-66-6] 

PHYSICAL CHEMISTRY

fosetyl-aluminium

Composition Tech. is ³95% pure.  Mol. wt. 354.1  M.f. C6H18AlO9P3  Form Colourless powder; (tech. is a white to yellowish powder).  M.p. >200 °C  V.p. <0.013 mPa (25 ºC)  KOW logP = -2.7 (pH 4)  Henry <3.93 ´ 10-8 Pa m3 mol-1 (calc.)  Solubility In water 120 g/l (20 ºC). In methanol 920, acetone 13, propylene glycol 80, ethyl acetate 5, acetonitrile 5, hexane 5 (all in mg/l, 20 ºC).  Stability Hydrolysis of fosetyl-aluminium occurs under extreme acid or alkaline conditions. DT50 5 d (pH 3), 13.4 d (pH 13). Decomposes above 200 ºC. 

APPLICATIONS

fosetyl-aluminium

Biochemistry Acts by inhibiting germination of spores or by blocking development of mycelium and sporulation.  Mode of action Systemic fungicide, rapidly absorbed through the plant leaves or roots, with translocation both acropetally and basipetally.  Uses Control of diseases caused by Phycomycetes (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.  Formulation types WG; WP.  Compatibility Incompatible with foliar fertilisers