Captan; N-Trichloromethylthio-4-cyclohexene-1,2-dicarboximide; N-(trichloromethylthio)cyclohex-4-ene-1,2-dicarboximide;

N-(trichloromethylthio)cyclohex-4-ene-1,2-dicarboximide

C₉H₈Cl₃NO₂S

Form Colourless to beige amorphous solid, with a pungent odour.

Melting point 178℃.

Density 1.74 (26℃).

Solubility In water 3.3 mg/l (25 ℃). In xylene 20, chloroform 70, acetone 21, cyclohexanone 23, dioxane 47, benzene 21, toluene 6.9, isopropanol 1.7, ethanol 2.9, diethyl ether 2.5 (all in g/kg, 26℃). Insoluble in petroleum oils.

Oral Acute oral LD50 for rats 9000 mg/kg.

Skin and eye Acute percutaneous LD50 for rabbits >4500 mg/kg.

Corrosive to eyes; mild skin irritant (rabbits).

Inhalation LC50 for rats 0.668 mg/l.

Control of a wide range of fungal diseases, e.g. scab, black rot, botryosphaeria rot, bitter rot, bull's eye rot, botrytis rot of pome fruit; shot-hole of stone fruit; peach leaf curl; brown rots of cherries, apricots, peaches, plums, and citrus fruit; downy mildew and black rot of vines; early and late blights of potatoes and tomatoes; Alternaria blight and leaf spot of carrots; anthracnose and downy mildew of cucurbits; leaf spot diseases of ornamentals; anthracnose and leaf spot diseases of tomatoes; brown patch on turf; Botrytis spp. on many crops; etc. Used on a large number of other crops. Used as a seed treatment or root dip for control of Pythium, Phoma, Rhizoctonia spp., etc. on maize, ornamentals, vegetables, oilseed rape, and other crops.

Description: White powder, free from visible extraneous matter;

Active Ingredient Content(w/w): ≥95%;

Loss on Drying(w/w): ≤0.8%;

pH Value: 6.0~8.0