Page Views: 160 Date Added: 10/25/2011 Last Updated: 10/25/2011 Expiry Date: 10/22/2021 Product/Service Details Product Name Dichlorvos CAS No. 62-73-7 Categories Insecticides NOMENCLATURE Common name: dichlorvos; dichlorfos; DDVP IUPAC name: 2,2-dichlorovinyl dimethyl phosphate Chemical Abstracts name: 2,2-dichloroethenyl dimethyl phosphate EEC no.: 200-547-7 PHYSICAL CHEMISTRY Mol. wt.: 221.0; M.f.: C4H7Cl2O4P; Form: Colourless liquid; (tech., colourless-to-amber liquid, with an aromatic odour). B.p.: 234.1C/1x105 Pa (OECD 103); 74C/1.3x102 Pa. V.p.: 2.1 103 mPa (25C) (OECD 104). KOW: logP = 1.9 (OECD 117); 1.42 (separate study). Henry: 2.58x10-2 Pa m3 mol-1 S.g./density: 1.425 (20C) (OECD 109). Solubility: In water c. 18 g/l (25C). Completely miscible with aromatic hydrocarbons, chlorinated hydrocarbons and alcohols; moderately soluble in diesel oil, kerosene, isoparaffinic hydrocarbons, and mineral oils. Stability: Stable to heat. Slowly hydrolysed in water and in acidic media, and rapidly hydrolysed by alkalis, to dimethyl hydrogen phosphate and dichloroacetaldehyde; DT50 (est.) 31.9 d (pH 4), 2.9 d (pH 7), 2.0 d (pH 9) (22C). F.p.: >100C (DIN 51758); 172C (Pensky-Martens closed cup, 1x105 Pa). APPLICATIONS Biochemistry: Cholinesterase inhibitor. Mode of action: Insecticide and acaricide with respiratory, contact, and stomach action. Gives rapid knockdown. Uses: Control of household and public health insect pests, e.g. flies, mosquitoes, cockroaches, bedbugs, ants, etc.; stored-product pests in warehouses, storerooms, etc.; flies and midges in animal houses; sciarid and phorid flies in mushrooms; sucking and chewing insects, and spider mites in a wide range of crops, including fruit, vines, vegetables, ornamentals, tea, rice, cotton, hops, glasshouse crops, etc. Also used as a veterinary anthelmintic. Phytotoxicity: Non-phytotoxic when used as directed, except to some varieties of chrysanthemum. Formulation types: AE; EC; GR; HN; KN; OL; SL; Impregnated strip. Compatibility: Incompatible with alkaline materials, chinomethionat, and dichlofluanid. MAMMALIAN TOXICOLOGY Oral: Acute oral LD50 for rats c. 50 mg/kg. Skin and eye: Acute percutaneous LD50 for rats c. 90 mg/kg. Slight skin and eye irritant (rabbits). Inhalation: LC50 (4 h) for rats 340 mg/m3; (1 h) for rats 455 mg/m3. NOEL: (2 y) for rats 10 mg/kg diet. ADI: 0.004 mg/kg b.w. Toxicity class: WHO (a.i.) Ib; EPA (formulation) I EC hazard: T R24/25 ECOTOXICOLOGY Birds: Acute oral LD50 for bobwhite quail 24 mg/kg. Sub-acute oral LD50 (8 d) for Japanese quail 300 mg/kg. Fish: LC50 (96 h) for rainbow trout 200, golden orfe 450 ug/l (both 500 EC). Daphnia: LC50 (48 h) 0.19 ug/l. Algae: EC50 (5 d) for Scenedesmus subspicatus 52.8 mg/l. Bees: Acute oral LD50 0.29 ug/bee. ENVIRONMENTAL FATE Animals: In mammals, following oral administration, rapidly degraded in the liver by hydrolysis and O-demethylation, with a half-life of c. 25 minutes. Plants: Rapidly decomposed in plants. Soil/Environment: Non-persistent in the environment, with rapid decomposition in the atmosphere. Undergoes hydrolysis in damp media, with the formation of phosphoric acid and CO2. But G. Keller et al. say soil metabolites are dichloroethanol, dichloroacetic acid and dichloroacetaldehyde; DT50 c. 10 h. Half-lives

Company Information ( Shanghai Kima Chemical Co., Ltd )

Company Profile: Shanghai Kima Chemical Co., Ltd. is a Chinese leading chemical enterprise and is engaged in the operation of agrochemicals, water treatment chemicals, Silicone sealants, Thickeners and some other chemicals. From the establishment in the year of 2004, the company has become the sole exporting agents for several domestic factories in Jiangsu Province and Zhejiang Province, also become the purchasing windows for many foreign customers. Based on rich operating experience, good occupation manners and strict working attitude, the company has won high reputations from customers. >> More Website URL: http://www.bridgat.com/u14730