Captan

Captan

克菌丹

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

3a,4,7,7a-tetrahydro-2-[(trichloromethyl)thio]-1H-isoindole-1,3(2H)-dione

133-06-2

C₉H₈Cl₃NO₂S

Fungicides > Dicarboximide fungicides

Captan provides consistent control of the most damaging diseases that attack apple, almond, stone fruit and berry. Along with superior efficacy against primary and secondary scab, captan delivers broad-spectrum control of many other diseases such as black rot (frogeye), sooty blotch, fly speck, black rot, Botryosphaeria rot, bull's eye rot, Botrytis rot and bitter rot.

Pyraclostrobin+Captan
Imidacloprid+captan+carboxin
Difenoconazole+Captan
Captan+Trifloxystrobin
Captan+tebuconazole
Captan+Carbendazim
Captan+Bromothalonil
Dust, flowable, wettable powder. Premix Parters: lindane;

Molecular weight:300.6; Physical form: Colourless crystals; (tech. is a colourless to beige amorphous solid, with a pungent odour). Density:1.74 (26 °C); Composition:Tech. is 90-95% pure. Melting point:178 °C (tech., 175-178 °C); Vapour pressure:<1.3 mPa(25 °C); Henry constant:<1.18×10-1 Pa m3 mol-1 (calc.); Partition coefficient(n-octanol and water):logP = 2.8 (25 °C); Solubility:In water 3.3 mg/l (25 °C). 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 °C). Insoluble in petroleum oils.; Stability:Hydrolysed slowly at neutral pH, rapidly in alkali. Thermal DT50 >4 y (80 °C), 14.2 d (120 °C). Very low solubility in organic solvents. Insoluble in petroleum oils. Solubility at 25°C: in xylene 20 g/kg; chloroform 70 g/kg; acetone 20 g/kg; cyclohexanone 20 g/kg; 2-propanol 1 g/kg.

Oral:Acute oral LD₅₀ for rats 9000 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for rabbits >4500 mg/kg. Corrosive to eyes; mild skin irritant (rabbits). Inhalation:LC₅₀ for male rats >0.72, female rats 0.87 mg/l (tech.). Dust may cause respiratory irritation. Phytotoxicity:Non-phytotoxic if used as directed, but some varieties of apple (e.g. Red Delicious, Winesap) and pear (e.g. D'Anjou, Bosc) may be injured, as also may lettuce seeds and, at higher dosage

Ecotoxicology: Bees:ED₅₀ (oral) 91; (contact) 788 mg/bee.Birds:Acute oral LD₅₀ for mallard ducks and pheasants >5000, bobwhite quail 2000-4000 mg/kg. Not toxic to starlings or red-winged blackbirds at 100 mg/kg.Daphnia: LC₅₀ (48 h) 7-10 ppm.Fish:LC₅₀(96 h) for bluegill sunfish 0.047-0.111 ppm,rainbow 0.066-0.080 ppm (96 h), trout harlequin fish 0.3 mg/l, brook trout 0.034 mg/l.Other aquatic spp.:Moderately toxic to aquatic invertebrates. Environmental fate: Animals:In mammals, the three chlorine atoms are cleaved under the influence of cellular sulfhydryl compounds. Trithiocarbamate, thiophosgene, and tetrahydrophthalimide are formed (R. G. Owens, Ann. New York Acad. Sci., 1969, 160, 114-13Soil:Soil K_d 3-8 (pH 4.5-7.2, o.m. 2.2-6.7%); DT₅₀ c. 1 d (25 °C, pH 7.2, o.m. 1.2%). WATER SOLUBILITY: <5 mg/l at room temperature.

Signal Word:DANGER; Hazard Class:Ib (Highly hazardous)