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    Insecticide
    Position :玩时时彩月入100万大神> Product > Pesticides > Insecticide
    Chlorpyrifos 95TECH 480EC 400EW
     

    Chlorpyrifos

    Insecticide

    IRAC  1B; organophosphate

     

     

    NOMENCLATURE

    Common name chlorpyrifos (BSI, E-ISO, ANSI, ESA, BAN); chlorpyriphos ((m) F-ISO, JMAF); chlorpyriphos-éthyl ((m) France)

    IUPAC name O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate 

    Chemical Abstracts name O,O-diethyl O-(3,5,6-trichloro-2-pyridinyl) phosphorothioate 

    CAS RN [2921-88-2]  EEC no. 220-864-4   

     

    PHYSICAL CHEMISTRY

    Mol. wt. 350.6  M.f. C9H11Cl3NO3PS  Form Colourless crystals, with a mild mercaptan odour.  M.p. 42-43.5 ºC  V.p. 2.7 mPa (25 ºC)  KOW logP = 4.7  Henry 6.76×10-1 Pa m3 mol-1 (calc.)  S.g./density 1.44 (20 °C)  Solubility In water c. 1.4 mg/l (25 ºC). In benzene 7900, acetone 6500, chloroform 6300, carbon disulfide 5900, diethyl ether 5100, xylene 5000, iso-octanol 790, methanol 450 (all in g/kg, 25 ºC).  Stability Rate of hydrolysis increases with pH, and in the presence of copper and possibly of other metals that can form chelates; DT50 1.5 d (water, pH 8, 25 ºC) to 100 d (phosphate buffer, pH 7, 15 ºC). 

     

    APPLICATIONS

    Biochemistry Cholinesterase inhibitor.  Mode of action Non-systemic insecticide with contact, stomach, and respiratory action.  Uses Control of Coleoptera, Diptera, Homoptera and Lepidoptera in soil or on foliage in over 100 crops, including pome fruit, stone fruit, citrus fruit, nut crops, strawberries, figs, bananas, vines, vegetables, potatoes, beet, tobacco, soya beans, sunflowers, sweet potatoes, peanuts, rice, cotton, alfalfa, cereals, maize, sorghum, asparagus, glasshouse and outdoor ornamentals, turf, and in forestry. Also used for control of household pests (Blattellidae, Muscidae, Isoptera), mosquitoes (larvae and adults) and in animal houses. Phytotoxicity Non-phytotoxic to most plant species when used as recommended. Poinsettias, azaleas, camellias, and roses may be injured.  Formulation types DP; EC; GR; UL; WG; WP; Microcapsule.  Compatibility Incompatible with alkaline materials. 

     

    ANALYSIS

    Product analysis by rplc (CIPAC Handbook, 1985, 1C, 2028; AOAC Methods, 17th Ed., 981.03). Residues determined by glc (A. Ambrus et al., J. Assoc. Off. Anal. Chem., 1981, 64, 733; AOAC Methods, 17th Ed., 985.22; Man. Pestic. Residue Anal., 1987, I, 6, S8, S9, S13, S19; Anal. Methods Residues Pestic., 1988, Part I, M2, M5, M12). Details available from Dow AgroSciences. 

     

    MAMMALIAN TOXICOLOGY

    Reviews K. D. Racke, Rev. Environ. Contam. Toxicol., 131, 1-151 (1993); M. G. Barron & K. B. Woodburn, ibid. 144, 1-93 (1995); D. J. Clegg & M. van Gemert, J. Toxicol. Environ. Health, B2, 211-255 (1999); FAO/WHO 86, 88 (see part 2 of the Bibliography).  Oral Acute oral LD50 for rats 135-163, guinea pigs 504, rabbits 1000-2000 mg/kg.  Skin and eye Acute percutaneous LD50 for rabbits >5000 mg/kg; (tech.) for rats >2000 mg/kg.  Inhalation LC50 (4-6 h) for rats >0.2 mg/l (14 ppb).  NOEL (2 y) for rats 1 mg/kg b.w. daily; (18 mo) for mice 0.7 mg/kg b.w. daily; (2 y) for dogs 1 mg/kg b.w. daily.  ADI (JMPR) 0.01 mg/kg b.w. [1999].  Other Non-teratogenic.  Toxicity class WHO (a.i.) II; EPA (formulation) II  EC classification T; R24/25| N; R50, R53 

     

    ECOTOXICOLOGY

    Birds Acute oral LD50 for mallard ducks 490, house sparrows (Passer domesticus) 122, chickens 32-102 mg/kg. Dietary LC50 (8 d) for bobwhite quail 423 ppm.  Fish LC50 (96 h) for bluegill sunfish 0.002-0.010, rainbow trout 0.007-0.051, roach 0.25, fathead minnow 0.12-0.54 mg/l.  Daphnia LC50 (48 h) 1.7 μg/l.  Algae NOEC for Selenastrum capricornutum >0.4 mg/l.  Other aquatic spp. LC50 for Korean shrimp (Palaemon macrodactylus) 0.05 μg/l.  Bees Toxic to bees. LD50 (oral) 360 ng/bee; (contact) 70 ng/bee.  Worms LC50 (14 d) for Eisenia foetida 210 mg/kg soil.  Other beneficial spp. Toxic to Collembola (J. A. Wiles & G. K. Frampton, Pestic. Sci., 47, 273 (1996)). 

     

    ENVIRONMENTAL FATE

    EHC 63 (WHO, 1986; a general review of organophosphorus insecticides).  Animals In rats, dogs, and other mammals, following oral administration, rapid metabolism occurs, the principal metabolite being 3,5,6-trichloropyridin-2-ol. Excretion is principally in the urine.  Plants Non-systemic in plants, not absorbed from soil via the roots. Residues taken up by plant tissues are metabolised to 3,5,6-trichloropyridin-2-ol which is conjugated and sequestered.  Soil/Environment In soil, chlorpyrifos is degraded at a moderate rate; DT50 (lab.) 10-120 d (25 °C); field DT50 for soil-incorporated applications 33-56 d, for soil-surface applications 7-15 d. Primary route of degradation is transformation to 3,5,6-trichloropyridin-2-ol, which is subsequently degraded to organochlorine compounds and CO2. Koc 1250-12 600. 

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  • 江西省节能宣传周活动启动 2019-07-18
  • 今年内蒙古高考各批次录取时间公布 2019-07-18
  • 北京:走进高考阅卷现场 2019-07-10
  • 巴州重点景区节庆活动成假日亮点 2019-06-24
  • 纪检监察机关加强扶贫领域监督执纪问责工作 2019-06-24
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  • 幸福是奋斗出来的——亚心网专题 2019-06-23
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