Page Views: 211 Date Added: 05/18/2010 Last Updated: 05/18/2010 Expiry Date: 05/13/2029 Product/Service Details Common name: atrazine IUPAC name: 6-chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine Chemical Abstracts name: 6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine CAS RN: [1912-24-9] PHYSICAL CHEMISTRY Composition: Tech. is 97% pure. Mol. wt.: 215.7; M.f.: C8H14ClN5; Form: Colourless powder. M.p.: 175.8 ºC; B.p.: 205.0 °C/101 kPa; V.p.: 3.85x10-2 mPa (25 ºC) (OECD 104). KOW: logP = 2.5 (25 ºC). Henry: 1.5x10-4 Pa m3 mol-1 (calc.) S.g./density: 1.23 (22 °C) Solubility: In water 33 mg/l (pH 7, 22 ºC). In ethyl acetate 24, acetone 31, dichloromethane 28, ethanol 15, toluene 4.0, n-hexane 0.11, n-octanol 8.7 (all in g/l, 25 ºC). Stability: Relatively stable in neutral, weakly acidic and weakly alkaline media. Rapidly hydrolysed to the hydroxy derivative in strong acids and alkalis, and at 70 ºC in neutral media; DT50 (pH 1) 9.5, (pH 5) 86, (pH 13) 5.0 d. pKa: 1.7, v. weak base. APPLICATIONS Biochemistry: Photosynthetic electron transport inhibitor at the photosystem II receptor site. Maize tolerance is attributed to rapid detoxification by glutathione transferases. Mode of action: Selective systemic herbicide, absorbed principally through the roots, but also through the foliage, with translocation acropetally in the xylem and accumulation in the apical meristems and leaves. Uses: Pre- and post-emergence control of annual broad-leaved weeds and annual grasses in maize, sorghum, sugar cane, pineapples, chemical fallow, grassland, macadamia nuts, conifers, industrial weed control. In Europe, use is concentrated in maize and sorghum. Used also in combinations with many other herbicides. Phytotoxicity: Phytotoxic to many crops, including most vegetables, potatoes, soya beans, and peanuts. Formulation types: FW; GR; SC; WG; WP. MAMMALIAN TOXICOLOGY Oral: Acute oral LD50 for rats 1869-3090 mg tech./kg, mice >1332-3992 mg/kg. Skin and eye: Acute percutaneous LD50 for rats >3100 mg/kg. Mild skin irritant; non-irritating to eyes (rabbits). Skin sensitiser in guinea pigs, but not in humans. Inhalation: LC50 (4 h) for rats >5.8 mg/l air. NOEL: (2 y) for rats 10 mg/kg diet (0.5 mg/kg daily), for dogs 150 mg/kg diet (3.75 mg/kg daily), for mice 10 mg/kg diet (1.4 mg/kg daily). ADI: 0.005 mg/kg b.w. Toxicity class: WHO (a.i.) III (Table 5); EPA (formulation) III EC hazard: (Xn; R48/22| R43| N; R50 R53) ECOTOXICOLOGY Birds: Acute oral LD50 varies from 940 mg/kg for bobwhite quail to >2000 mg/kg for mallard ducks and 4237 mg/kg for adult Japanese quail. Dietary LC50 (8 d) for Japanese quail (chicks) >5000, (adults) >1000 mg/kg. Fish: LC50 (96 h) for rainbow trout 4.5-11.0, bluegill sunfish 16, carp 76, catfish 7.6, guppies 4.3 mg/l. Daphnia: LC50 (24 h) 87 mg/l. Algae: EC50 (72 h) for Scenedesmus subspicatus 0.043 mg/l, (96 h) for Selenastrum capricornutum 0.13 mg/l. Bees: LD50 (oral) >97 ug/bee; (contact) >100 ug/bee. Worms: LC50 (14 d) for Eisenia foetida 78 mg/kg soil. ENVIRONMENTAL FATE Animals: In mammals, following oral administration, atrazine is rapidly and completely metabolised, primarily by oxidative dealkylation of the amino groups, and by reaction of the chlorine atom with endogenous thiols. Diaminochlorotriazine is the main primary metabolite, which readily conjugates with glutathione. More than 50% of the dose is eliminated in the urine and around 33% in the faeces within 24 h. Plants: In tolerant plants, atrazine is readily metabolised to hydroxyatrazine and amino acid conjugates, with further decomposition of hydroxyatrazine by degradation of the side-chains and hydrolysis of the resulting amino acids on the ring, together with evolution of CO2. In sensitive plants, unaltered atrazine accumulates, leading to chlorosis and death. Soil/Environment: Major metabolites under all conditions are desethylatrazine and hydroxyatrazine. Field DT50 16-77 d (median 41 d), the longer values being from cold or dry conditions. In natural waters, DT50 10-105 d (mean 55 d). DT50 under groundwater conditions 105->200 d, depending on test system. Kd 0.2-18 ml/g, Koc 39-173 ml/g; desalkylated metabolites had values similar to those of atrazine, while hydroxyatrazine was much more strongly adsorbed.

Atrazine, herbicide

Company Information (Shanghai Skyblue Chemical Co., Ltd.)

Company Profile: Shanghai Skyblue Chemical Co., Ltd. is an integrated company located in Pudong New Area of Shanghai China. Our business scopes include the development, manufacturing, researching, and marketing agrochemicals. We are capable of supplying a wide range of high quality agrochemicals, including insecticides (especially household and public health insecticides), fungicides, herbicides, pesticide synergists and other relative agrochemicals in both technical grade and formulation in different packages as per customer's requirements. To make quality products is our credo. We always target to provide our customers with top quality products along with moderate prices and professional services, and endeavor to be a 360o-solution supplier for agrochemicals. Currently our products are being exported to more than twenty countries and enjoy high reputation in the global market. On the basis of equality and mutual benefits, we always look forward to establishing and maintaining long term partnerships with all customers toward a future of resplendence. At present we can supply the following products: Insecticides: Acetamiprid,Alpha-Cypermethrin, Aluminium Phosphide, Azamethiphos, Beta-Cyfluthrin, Bifenthrin, Bioallethrin, Carbaryl, Carbofuran, Carbosulfan, Cartap, Chlorpyrifos, Cyfluthrin, D-Allethrin, D-Cyphenothrin, Deltamethrin, Dichlorvos, Diethyltoluamide, Dimehypo, Dimethoate, D-Phenothrin, D-Tetramethrin, Empenthrin, Es-bioallethrin, Es-Fenvalerate, Etofenprox, Fenitrothion, Fenpropathrin, Fenthion, Fenvalerate, Fipronil, Flumethrin, Hydramethylnon, Imidacloprid, Imiprothrin, Lambda-cyhalothrin, Malathion, Permethrin, Pirimiphos-methyl, Prallethrin, Propoxur, S-Bioallethrin, Tefluthrin, Tetramethrin, Thiocyclam, Transfluthrin Fungicides: Clofentezine, Difenoconazole, Mancozeb, Metiram, Propiconazole, Propineb, Tebuconazole, Thiabendazole Herbicides: Acetochlor, Ametryn, Atrazine, Bensulfuron-methyl, Butachlor, Chlorimuron-ethyl, Chlorsulfuron, Cyanazine, Fenchlorazole, Fenoxaprop-p-ethyl, Glyphosate, Metsulfuron-methyl, Nicosulfuron, Prometryn, Pyrazosulfuron-ethyl, Quinclorac, Quizalofop-p-ethyl, Simazine, Simetryn, Terbuthylazine, Terbutryn, Tribenuron-methyl Pesticide Synergists: Piperonyl Butoxide, MGK 264. >> More Website URL: http://www.bridgat.com/u15636