nav Searchuser
Chemical Identification
Common Name
Dicofol
中文通用名
三氯杀螨醇
IUPAC
2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol
or
α,α,α,4,4′-pentachloro-α-methylbenzhydryl alcohol
CAS
4-chloro-α-(4-chlorophenyl)-α-(trichloromethyl)benzenemethanol
CAS No.
115-32-2
Molecular Formula
C14H9Cl5O
Molecular Structure
Category
Activity
Acaricide/Miticide
Premix
Fenpropathrin+dicofol
Emulsifiable concentrate, wettable powder. Premix Parters: calciferol.
Physical Properties
Molecular weight:370.5. Physical form:Colourless solid; ( tech. is a brown, viscous oil), amber emulsion (41.1%). Specific gravity at 20°C, 1.130. At 20°C wt./gal. 9.4. Density:1.45 (25 °C; tech.); Composition:Tech. is 95% pure, composed of 80% dicofol and 20% its -1-(2-chlorophenyl)-1-(4-chlorophenyl)- isomer ('o,p'-dicofol'). Melting point:78.5-79.5 °C; Flash point:193 °C (open cup). Vapour pressure:0.053 mPa ( tech.). Partition coefficient(n-octanol and water):logP = 4.30; Solubility:In water 0.8 mg/l (25 °C). In acetone, ethyl acetate, toluene 400, methanol 36, hexane, isopropanol 30 (all in g/l, 25 °C). Stability:Stable to acids, but unstable in alkaline media, being hydrolysed to 4,4'-dichlorobenzophenone and chloroform; DT50 ( pH 5) 85 d, ( pH 7) 64-99 h, ( pH 9) 26 min.
Toxicology
Oral:Acute oral LD50 for male rats 595 mg/kg, female rats 578 mg/kg; rabbits 1810 mg/kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg, rabbits >2500 mg/kg. Inhalation: LC50 (4 h) for rats >5 mg/l air. Phytotoxicity:Non-phytotoxic when used as directed, but aubergines and pears may be injured. ADI:0.05 mg/kg.
Environmental Profile
Ecotoxicology: 
Algae: EC50 (96 h) for Scenedesmus 0.075 mg/l.Bees:Not toxic to bees; LD50 (contact) >50 µg tech./bee; (oral) >10 µg tech./bee.Birds: LC50 (5 d) for bobwhite quail 3010, Japanese quail 1418, ring-necked pheasants 2126, mallard ducks 1651 ppm. In eggshell quality and reproduction studies, NOAEL for American kestrel 2, mallard ducks 2.5, bobwhiDaphnia: LC50 (48 h) 0.14 mg/l.Fish: LC50 (96 h) for channel catfish 0.30 mg/l, bluegill sunfish 0.51 mg/l, largemouth bass 0.45 mg/l, fathead minnow 0.183 mg/l, sheepshead minnow 0.37 mg/l. LC50 (24 h) for rainbow trout 0.12 mg/l. Worms:50 (7 d) 43.1 , (14 d) 24.6 ppm.Other aquatic spp.: LC50 (96 h) for mysid shrimp (Mysidopsis bahia) 0.06 mg/l; EC50 for oyster shell 0.15, fiddler crab 64, invertebrate early life stage (Hyalella) 0.19 mg/l. 
Environmental fate: 
Animals:In rats, following oral administration, 4,4'-dichlorobenzophenone and 2,2'-dichloro-1,1'-bis(chlorophenyl)ethanol are the principal metabolites. The same metabolites have been detected in laying hens and dairy goats.Soil:Soil photodegradation DT50 (silt loam) 30 d. Aqueous photodegradation DT50 ( pH 5, sensitised conditions) 1-4 d; (unsensitised conditions) 15-93 d. Soil metabolism (aerobic) in silt loaPlant:The principal metabolite in plants is 4,4'-dichlorobenzophenone.
WATER SOLUBILITY: 0.8 mg/l at 25° C.
Transport Information
Signal Word:DANGER; Hazard Class:Ib (Highly hazardous).

Porduct NewsMore

US EPA reapproves glyphosate, claims pesticide poses no human health threat

Glyphosate

US EPA issues proposed interim decision on neonicotinoids, opens comments

Clothianidin Thiamethoxam Imidacloprid

Bayer considering stopping sales of glyphosate to private users

Glyphosate

Brazil: Ihara to launch new insecticide Zeus at Cocari Field Day

Dinotefuran

Canada confirmes continued registration of products containing folpet

Folpet

Internal docs show Monsanto, BASF prepared for drift complaints prior to dicamba launch

Dicamba

Canada confirms continued registration of clodinafop-propargyl based products

Clodinafop-propargyl

Brazil authorizes use of spinetoram for chrysanthemum

Spinetoram

Certain plant pesticides banned in Switzerland from July

Chlorpyrifos

Crackdown on counterfeit and inferior pesticides: Hunan rules two cases of suspected infringement of FMC patented Metamifop products

Metamifop

Related CompaniesMore

Indofil Industries Limited

Country:  India