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Azamethiphos Insecticide

Posted at: Offers to Sell and Export | Posted on: Fri 18 Jun, 2010 6:40 am | Product Category: Insecticides [73]
azamethiphos insecticide
Products Photos CatalogAzamethiphos Photos Catalog

Common name: azamethiphos

IUPAC name: S-6-chloro-2, 3-dihydro-2-oxo-1, 3-oxazolo[4, 5-b]pyridin-3-ylmethyl

O, O-dimethyl phosphorothioate; 6-chloro-3-dimethoxyphosphinoylthiomethyl-1, 3-oxazolo[4, 5-b]pyridin-2(3H)-one

Chemical Abstracts name: S-[(6-chloro-2-oxooxazolo[4, 5-b]pyridin-3(2H)-yl)methyl] O, O-dimethyl phosphorothioate

Cas rn: [35575-96-3]

EEC no.: 252-626-0

Physical chemistry

Composition: Tech. is >95%. Mol. wt.: 324.7; M.f.: C9H10ClN2O5PS; Form: Colourless crystals; (tech. is a beige to grey powder). M.p.: 89 C. V.p.: 0.0049 mPa (20 C). KOW: logP = 1.05; Henry: 1.45x10-6 Pa m3 mol-1 (calc.) S.g./density: 1.60 (20 C). Solubility: In water 1.1 g/l (pH 7, 20 C). In dichloromethane 610, benzene 130, methanol 100, n-octanol 5.8 (all in g/kg, 20 C). Stability: Unstable in acids and alkalis; DT50 (20 C) (calc.): 800 h (pH 5), 260 h (pH 7), 4.3 h (pH 9). F.p.: >150 C (Marcusson, without stirring).


Biochemistry: Cholinesterase inhibitor.

Mode of action: Insecticide with contact and stomach action. Gives rapid knockdown, and has good residual activity.

Uses: Control of flies and other insect pests in animal houses. Control of mosquitoes, tsetse flies, cockroaches, and other public hygiene pests.

Formulation types: AE; WP.

Mammalian toxicology

Oral: Acute oral LD50 for rats 1180 mg/kg.

Skin and eye: Acute percutaneous LD50 for rats >2150 mg/kg. Mild eye irritant; non-irritating to skin (rabbits).

Inhalation: LC50 (4 h) for rats >560 mg/m3 air.

NOEL: (90 d) for rats 20 mg/kg diet (2 mg/kg daily), for dogs 10 mg/kg diet (0.3 mg/kg daily).

ADI: 0.025 mg/kg.

Toxicity class: WHO (a.i.) III; EPA (formulation) III


Birds: Acute oral LD50 for bobwhite quail 30.2, mallard ducks 48.4 mg/kg. Dietary LC50 (8 d) for bobwhite quail 860, Japanese quail >1000, mallard ducks 700 ppm. Based on the results of acute laboratory trials, azamethiphos is classified as highly toxic to birds. However, sublethal doses have a repellent effect on birds, so the risk for birds is significantly reduced.

Fish: LC50 (96 h) for channel catfish 3, crucian carp 6, guppy 8, rainbow trout 0.115-0.2, sheepshead minnow 2.22 mg/l. Based on the test with the most sensitive species, rainbow trout, azamethiphos is classified as highly toxic to fish. All other test species were less sensitive to this compound.

Daphnia: LC50 (48 h) 0.67 ug/l.

Bees: Toxic to bees; LD50 (24 h) (oral) <0.1 ug/bee; (contact) 10 ug/bee.

Environmental fate

Animals: In rats and goats, the glucuronic acid conjugate of 2-amino-3-hydroxy-5-chloropyridine represents the major metabolite, accounting for 27-48% of the dose, followed by the corresponding sulfuric acid conjugate accounting for 3-20% of the dose.

Soil/Environment: In loamy sand (aerobic), DT50 c. 6 h.

Company Contact:

No member photo
Contact Name: Kevin Xu
Company Name: Shanghai Skyblue Chemical Co., Ltd.
Email: Email
Tel: 86-21-58356613
Fax: 86-21-58358362
Street Address: Rm 15A02, Changhang
Mansion, No.800, Zhangyang Road,
Pudong, Shanghai, 200122, China
Website: http://www.skybluechem.com
Member name: skybluechem
Country: China-CN China
Member Since: 17 June 2010
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Product Category: Insecticides [73]

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