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Dimethoate 40% EC Nematode Pesticide CAS 60-51-5 Environment Friendly

Shanghai Molotus Chemical Co.,ltd

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Dimethoate 40% EC Nematode Pesticide CAS 60-51-5 Environment Friendly

Brand Name : molotus
Model Number : dimethoate 40%EC
Place of Origin : china
MOQ : as demand
Payment Terms : L/C, D/A, D/P, Western Union, T/T
Delivery Time : 15-20 days for large package; 20-25 days for small package
Packaging Details : 25KG Drum/Bags; 1KG, 500g, 250g, 200g Aluminum bags
pesticide : dimethoate 40%EC
form : liquid
solubility : In water 23.3 (pH 5)
stability : Relatively stable in aqueous media at pH 2-7
target plant : Coccidae, Coleoptera, Collembola, Diptera, Lepidoptera, Pseudococcidae
Product name : Insecticide Pesticide
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CAS 60-51-5 Dimethoate 40% EC Nematode Pesticide Environment Friendly


Composition Tech. grade is 95% pure. Mol. wt. 229.3 M.f. C5H12NO3PS2 Form Colourless crystals; (tech., white solid pellets). M.p. 50.0-51.5 °C (purity 99.5%) B.p. 117 ºC/0.1 mmHg V.p. 0.25 mPa (25 °C) KOW logP = 0.704 Henry 1.42 ´ 10-6 Pa m3 mol-1 S.g./density 1.31 (20 °C, 99.1% pure) Solubility In water 23.3 (pH 5), 23.3 (pH 7), 25.0 (pH 9) (all in g/l, 25 ºC). Readily soluble in most organic solvents, e.g. in alcohols, ketones, benzene, toluene, chloroform, dichloromethane >300, carbon tetrachloride, saturated hydrocarbons, n-octanol >50 (all in g/kg, 20 ºC). Stability Relatively stable in aqueous media at pH 2-7. Hydrolysed in alkaline solutions; DT50 4.4 d (pH 9). Photostability DT50 >175 d (pH 5). Decomposes on heating, forming the O,S-dimethyl analogue. pKa 2.0 (20 °C) Other properties Surface tension 47.8 mN/m.


Biochemistry Cholinesterase inhibitor. Mode of action Systemic insecticide and acaricide with contact and stomach action. Uses Control of a wide range of Acari, Aphididae, Aleyrodidae, Coccidae, Coleoptera, Collembola, Diptera, Lepidoptera, Pseudococcidae and Thysanoptera in cereals, citrus, coffee, cotton, fruit, grapes, olives, pastures, beetroot, potatoes, pulses, tea, tobacco, ornamentals, ornamental shrubs, and vegetables. Also used for control of flies in animal houses. Typical application rates for cereals 340-680, citrus 2100, olives 720, beetroot 84-600, vegetables 330 -600 (all in g/ha per application). Phytotoxicity Non-phytotoxic when used as directed, except to some varieties of lemon, peach, fig, olive, walnut, hop, tomato, bean, cotton, and pine. Russetting is possible with Red Delicious and Golden Delicious apples, and with some ornamentals. Phytotoxicity is dependent on crop variety and climate.


Product analysis by glc with FID or by hplc (CIPAC Handbook, 1998, H, 153; ibid., 1992, E, 69). Residues determined by glc (Analyst (London), 1977, 102, 858; 1980, 105, 515; 1985, 110, 765; J. E. Boyd, Anal. Methods Pestic. Plant Growth Regul., 1972, 6, 357; Man. Pestic. Residue Anal., 1987, I, 3, 6, S8, S13, S17, S19; Anal. Methods Residues Pestic., 1988, Part I, M5, M12); J. Chromatogr., 1996, A, 750, 369.


Reviews FAO/WHO 77, 79 (see part 2 of the Bibliography). Oral Acute oral LD50 for rats 387, mice 160, rabbits 300, guinea pigs 350 mg/kg b.w. Skin and eye Acute dermal LD50 for rats >2000 mg/kg. Non-irritating to skin and eyes (rabbits). Not a skin sensitiser. Inhalation LC50 (4 h) for rats >1.6 mg/l air (highest attainable concentration). NOEL (2 y) for rats 0.23 mg/kg b.w. daily; (1 y) for dogs 0.2 mg/kg b.w. daily; (39 d) human volunteer 0.2 mg/kg b.w. daily. ADI (JMPR, PSD) 0.002 mg/kg b.w. (sum of dimethoate and omethoate, expressed as dimethoate) [1996, 2001]. Toxicity class WHO (a.i.) II; EPA (formulation) II EC classification (Xn; R21/22| R48/22)


Birds Acute oral LD50 for mallard ducks 42, bobwhite quail 10.5, Japanese quail 84, ring-necked pheasants 14.1 mg/kg b.w. LC50 for mallard ducks 1011, bobwhite quail 154, Japanese quail 346, ring-necked pheasants 396 ppm. Fish LC50 (96 h) for rainbow trout 24.5, bluegill sunfish 17.6 mg/l. Daphnia EC50 (48 h) 2 mg/l; NOEC (24 h) 1 mg/l. Algae EbC50 (72 h) for Selenastrum capricornutum 90.4 mg/l; ErC50 (72 h) for Selenastrum capricornutum 282.3 mg/l; NOEC (72 h) 30.5 mg/l. Bees Toxic to bees; LD50 (oral) 0.15 mg/bee; (contact) 0.12 mg/bee. Worms LC50 31 mg/kg dry soil. Other beneficial spp. LR50 (7 d) for Typhlodromus pyri 2.24 g/ha; LR50 (48 h) for Aphidius rhopalosiphi 0.024 g/ha.


EHC 90 (WHO, 1989), 63 (WHO, 1986; a general review of organophosphorus insecticides). Dimethoate degrades with short half-life in soil, water and plants. When used correctly, exposure of the population through air, food or water is negligible. Animals In mammals, metabolism follows the same pattern as in plants. Plants In plants, the following metabolite transformations occur: oxidation to yield omethoate (q.v.), O-demethylation and N-demethylation of omethoate to yield O-desmethyl N-desmethyl omethoate, hydrolysis of amide bond to give dimethoate carboxylic acid and subsequent degradation to give O,O-dimethyl dithiophosphoric acid, demethylation and rearrangement to yield O-desmethyl dimethoate or O-desmethyl isodimethoate, demethylation of omethoate to give O-desmethyl omethoate and subsequent hydrolysis of the amide bond to give O-desmethyl omethoate carboxylic acid. Omethoate is classified as toxic and a strong cholinesterase inhibitor, and appears to show similar rapid degradation in environmental compartments as dimethoate. Soil/Environment Adsorption and desorption constants have been shown to be a linear function of soil silt content. Koc ranges from 16.25 (sandy loam) to 51.88 (sand/loamy sand). Aerobic DT50 2-4.1 d. Photolytic DT50 on soil surface 7-16 d. Low potential for leaching to groundwater because of rapid degradation in soil.

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nematode killer


agricultural insecticides

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