Dithianon
Specification: 95%TC, 50%WP, 66%WDG, 70%WDG, 500SC
Chemical name: 5,10-Dihydro-5,10-dioxonaphtho(2,3-b)-1,4-dithiin-2,3-dicarbonitrile; 5,10-Dihydro-5,10-dioxonaphtho(2,3-b)-p-dithiin-2,3-dicarbonitrile; Dicyano-1,4-dithia-anthraquinone; Dithiaanthraquinone-2,3-dinitrile
Molecular Formula: C14H4N2O2S2
Molecular Weight: 296.32
CAS Number: 3347-22-6
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EINECS No.: 222-098-6
Physical & Chemical Properties
Properties: Dark brown crystals, with a coppery lustre; (tech., lighter brown).
Toxicity
Oral: Acute oral LD50 for rats 678, guinea pigs 115 mg/kg.
Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Mild skin and eye irritant.
Inhalation: LC50 (4 h) for rats 2.1 mg/l air.
NOEL: (2 y) for rats 20, dogs 40 mg/kg diet; for mice 2.8 mg/kg daily.
ADI: (JMPR) 0.01 mg/kg b.w. [1992].
Toxicity class: WHO (a.i.) III; EPA (formulation) III
EC hazard: Xn; R22| N; R50, R53
Application
Dithianonis used to control many foliar diseases (but not powdery mildews), includingscab on pome fruit; Stigmina carpophila, Coccomyces hiemalis and scab oncherries; Monilia spp., rust and leaf curl on peaches and apricots; leaf spotand rust on currants; Didymella applanata on raspberries; Mycosphaerellafragariae and Diplocarpon earliana on strawberries; Plasmopara viticola onvines; downy mildew on hops; scab and Phomopsis citri on citrus fruit;Ascochyta chrysanthemi on chrysanthemums under glass; Glomerella cingulata oncoffee; Marssonina leaf spot on poplars; etc. Applied at 1400 g/ha (hops), 525g/ha (pome and stone fruit), 560 g/ha (vines).
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