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Fentin-Hydroxide

Fentin-Hydroxide NOMENCLATURE
fentin
Common name fentin (BSI, E-ISO); fentine ((f) F-ISO); fenolovo* (former exception, USSR); chemical name is used (Republic of South Africa, USA)
IUPAC name triphenyltin
Chemical Abstracts name triphenylstannylium
CAS RN [668-34-8] Development codes VP 1940; Hoe 02824 (Hoechst)

fentin acetate
IUPAC name triphenyltin(IV) acetate; triphenyltin acetate
Chemical Abstracts name (acetyloxy)triphenylstannane
CAS RN [900-95-8] EEC no. 212-984-0 Development codes Hoe 002782 (Hoechst) Official codes OMS 1020; ENT 25208

fentin hydroxide
IUPAC name triphenyltin(IV) hydroxide; triphenyltin hydroxide
Chemical Abstracts name hydroxytriphenylstannane
CAS RN [76-87-9] EEC no. 200-990-6 Official codes OMS 1017; ENT 28009

PHYSICAL CHEMISTRY
fentin
Mol. wt. 350.0 M.f. C18H15Sn

fentin acetate
Patents US 3499086 (Hoechst) Manufacturers Aventis

fentin hydroxide
Manufacturers Aventis

Fentin-Hydroxide APPLICATIONS
fentin acetate
Biochemistry Multi-site inhibitor, preventing spore germination, and inhibiting metabolism of the fungal organism, in particular respiration. Mode of action Non-systemic fungicide with mainly protective action, but also some curative action. Also acts as an algicide and molluscicide. Uses Control of early and late blights of potatoes; Septoria leaf spot on celery and celeriac; leaf spot diseases of onions, sugar beet and peanuts; anthracnose of beans; rust and leaf blotch on wheat; rust on coffee; scab on pecans; Phytophthora palmivora and Monilia roreri on cocoa; Pyricularia oryzae, Pellicularia sasakii and Helminthosporium oryzae on rice; etc. Also used for control of algae and snails in rice fields, and for control of water snails in fish ponds. Phytotoxicity Vines, ornamentals, some fruits, and glasshouse crops may be injured. Formulation types WP. Compatibility Incompatible with oil emulsions and EC formulations. Selected tradenames: 'Suzu' (Nihon Nohyaku); mixtures: 'Brestan' (+ maneb) (Aventis)

fentin hydroxide
Biochemistry Multi-site inhibitor, preventing spore germination, and inhibiting metabolism of the fungal organism, in particular respiration. Mode of action Non-systemic fungicide with protective and curative action. Uses Control of early and late blights of potatoes; Septoria leaf spot on celery and celeriac; leaf spot diseases of beet and peanuts; scab and other diseases of pecans; blast diseases of rice; and fungal diseases of cocoa, coffee, and soya beans. Exhibits an anti-feeding action on leaf-eating larvae, including Spodoptera spp. Phytotoxicity Non-phytotoxic when used as directed. Tomatoes and apples may be injured. Surfactants, spreaders or stickers should not be used, as this can lead to phytotoxicity. Formulation types SC; WP. Compatibility Not compatible with strongly acidic compounds. Incompatible with oils and liquid formulations. Selected tradenames: 'Brestan' (Aventis); 'Tubotin' (Aventis); 'Super-Tin' (Chiltern, Griffin); 'Suzu-H' (Nihon Nohyaku)

Fentin-Hydroxide OTHER TRADENAMES
fentin acetate
Discontinued names: 'Fentol' * (Bayer); 'Hokko Suzu' * (Hokko); 'Radar' * (Productos OSA)

fentin hydroxide
'Brestanid' (Aventis); 'Farmatin' (Aventis); 'Duter' (BASF); 'Keytin' (Chiltern); 'MSS Flotin 480' (Mirfield) mixtures: 'Pro-Tex' (+ maneb) (Griffin); 'Timbal F' (+ tetraconazole) (Sipcam Phyteurop) Discontinued names: 'Du Ter' * (Duphar); 'Ashlade Flotin' * (Ashlade) mixtures: 'EndSpray' * (+ metoxuron) (PBI)

Fentin-Hydroxide ANALYSIS
Product analysis: fentin acetate and hydroxide may be determined by conversion to fentin chloride, followed by rp hplc with u.v. detection (CIPAC Handbook, 1992, E, 89-94), or by hydrolysis of fentin acetate to the hydroxide, which is measured by potentiometric titration (CIPAC Handbook, 1980, 1A, 1263, 1266; AOAC Methods, 1995, 979.02) or by glc of a derivative (ibid., 984.04; CIPAC Handbook, 1983, 1B, 1837; Van Rossum et al., Anal. Methods Pestic. Plant Growth Regul., 1980, 11, 227). Residues determined by atomic absorption spectrophotometry of total tin (W. H. Evans et al., Analyst (London), 1979, 104, 16; T. Ferri et al., Talanta, 1989, 36, 513) or by glc of a derivative (H. H. van den Broek et al., Analyst (London), 1988, 113, 1237; Van Rossum, loc. cit.; P. G. Baker et al., Analyst (London), 1980, 105, 282).

Fentin-Hydroxide MAMMALIAN TOXICOLOGY
Reviews FAO/WHO 62, 64 (see part 2 of the Bibliography).