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Chemical Identification
Common Name
Dichlofluanid
中文通用名
苯氟磺胺
IUPAC
N-dichlorofluoromethylthio-N′,N′-dimethyl-N-phenylsulfamide
CAS
1,1-dichloro-N-[(dimethylamino)sulfonyl]-1-fluoro-N-phenylmethanesulfenamide
CAS No.
1085-98-9
Molecular Formula
C9H11Cl2FN2O2S2
Molecular Structure
Category
Activity
Fungicide
Premix
Permethrin+dichlofluanid+tebuconazole
Dust, wettable powder, water dispersible granule. Premix Parters: amitrole diuron; 2,4-D; 2,4-D dicamba; 2,4-D mecoprop; 2,4-D mecoprop-P; dicamba ioxynil; ioxynil; ioxynil MCPA; MCPA mecoprop.
Physical Properties
Molecular weight:333.2; Physical form:Colourless, odourless, crystalline powder. Melting point:106 °C; Vapour pressure:0.014 mPa (20 °C); Henry constant:3.6×10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 3.7 (21 °C); Solubility:In water 1.3 mg/l (20 °C). In dichloromethane >200, toluene 145, isopropanol 10.8, hexane 2.6 (all in g/l, 20 °C).; Stability:Decomposed by alkaline media; DT50 (22 °C) >15 d ( pH 4), >18 h ( pH 7), <10 min ( pH 9), and by polysulfides. Sensitive to light. Moderately soluble in organic solvents.
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Slight skin irritant; moderate eye irritant (rabbits). Skin sensitiser. Inhalation: LC50 (4 h) for rats c. 1.2 mg/l air (dust), >0.3 mg/l (aerosol). Phytotoxicity:Some stone fruits and ornamentals may suffer slight injury. ADI:0.025 mg/kg b.w
Environmental Profile
Ecotoxicology: 
Algae: ErC50 for Scenedesmus subspicatus 16 ml/l.Bees:Not toxic to bees.Birds:Acute oral LD50 for Japanese quail >5000 mg/kg. Daphnia: LC50 (48 h) >1.8 mg/l (90% pre-mix).Fish: LC50 (96 h) for rainbow trout 0.01, golden orfe 0.12, bluegill sunfish 0.03 mg/l.Worms: LC50 for Eisenia foetida >890 mg/kg dry soil. 
Environmental fate: 
Animals:In rats, following oral administration, dichlofluanid is rapidly absorbed and excreted, mainly via the urine. There is no accumulation in organs and tissues. Dichlofluanid is metabolised to dimethylsulfanilide, which is further hydroxylated and/or demethySoil:Due to its instability in soil, dichlofluanid is not leached into deeper soil layers. The main metabolite (dimethylsulfanilide) is further degraded and, according to parent and aged leaching studies, is unlikely to leach into deeper soil layers.Plant:In plants, dichlofluanid is metabolised to dimethylsulfanilide, which is further demethylated and/or hydroxylated and conjugated.
WATER SOLUBILITY: 1.3 mg/l at 20° C.
Transport Information
Signal Word:CAUTION; Hazard Class:III (Slightly hazardous)

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