Page Views: 268 Date Added: 05/20/2010 Last Updated: 05/20/2010 Expiry Date: 05/15/2029 Product/Service Details Common name: terbuthylazine IUPAC name: N2-tert-butyl-6-chloro-N4-ethyl-1,3,5-triazine-2,4-diamine Chemical Abstracts name: 6-chloro-N-(1,1-dimethylethyl)-N'-ethyl-1,3,5-triazine-2,4-diamine CAS RN: [5915-41-3] PHYSICAL CHEMISTRY Composition: Tech. is 97 % pure. Mol. wt.: 229.7; M.f.: C9H16ClN5 Form: Colourless powder. M.p.: 177-179 ºC; V.p.: 0.15 mPa (25 ºC) KOW: logP = 3.21 (unionised); Henry: 4.05x10-3 Pa m3 mol-1 (calc.) S.g./density: 1.188 (20 ºC). Solubility: In water 8.5 mg/l (pH 7, 20 ºC). In acetone 41, ethanol 14, n-octanol 12, n-hexane 0.36 (all in g/l, 25 ºC). Stability: Stable in neutral, weakly acidic and weakly alkaline media; hydrolysed in acidic or alkaline media; DT50 (20 ºC) (calc.) 8 d (pH 1), 12 d (pH 13). In natural sunlight, DT50 >40 d. pKa: 2.0, v. weak base. F.p.: >150 ºC. APPLICATIONS Biochemistry: Photosynthetic electron transport inhibitor at the photosystem II receptor site. Maize tolerance of triazines is attributed to conjugation with glutathione. Mode of action: Herbicide, absorbed mainly by the roots. Uses: Broad-spectrum pre- or post-emergence weed control in maize, sorghum, vines, fruit trees, citrus, coffee, oil palm, cocoa, olives, potatoes, peas, beans, sugar cane, rubber, and in forestry in tree nurseries and new plantings. It remains largely in the topsoil, controlling a wide range of weeds, at rates of 0.6-3 kg a.i./ha; high rates are only recommended as band applications. Phytotoxicity: Phytotoxic to many annual plants and to aquatic plants. Formulation types: SC; WG. MAMMALIAN TOXICOLOGY Oral: Acute oral LD50 for rats 1590->2000 mg/kg. Skin and eye: Acute percutaneous LD50 for rats >2000 mg/kg. No skin or eye irritation. Not a skin sensitiser. Inhalation: LC50 (4 h) for rats >5.3 mg/l air. NOEL: (1 y) for dogs 0.4 mg/kg b.w. daily; (lifetime) for rats 0.22 mg/kg b.w. daily; (2 y) for mice 15.4 mg/kg b.w. daily. ADI: 0.0022 mg/kg. Toxicity class: WHO (a.i.) III (Table 5); EPA (formulation) III EC hazard: (R22) ECOTOXICOLOGY Birds: Acute oral LD50 for ducks and quail >1000 mg/kg. Dietary LC50 (8 d) for ducks and quail >5620 ppm. Fish: LC50 (96 h) for rainbow trout 3.8-4.6, bluegill sunfish 7.5, carp and catfish 7.0 mg/l. Daphnia: LC50 (48 h) 21-50.9 mg/l. Algae: EC50 (72 h) for Scenedesmus subspicatus 0.016-0.024 mg/l. Bees: LD50 (oral and contact) >100 ug/bee. Worms: LC50 (7 d) for earthworms >200 mg/kg soil. Other beneficial spp.: No effects on bacterial respiration and nitrification in range 10.9-109 mg/kg soil. ENVIRONMENTAL FATE Animals: In mammals, following oral administration, 72-84% is eliminated in the urine and faeces within 24 h, and almost all within 48 h. A de-ethyl metabolite forms rapidly, followed by conjugates of products formed by oxidation of one methyl group of the tert-butyl moiety. All are rapidly excreted. Plants: Triazine-tolerant plants (e.g. maize) rapidly de-chlorinate terbuthylazine to hydroxy-terbuthylazine. Various amounts of de-ethylated and hydroxy de-ethylated metabolites are produced, depending on the plant species. Soil/Environment: Adsorption on soils is strong: Koc 162-278, Kd 2.2-25 are typical values for light agricultural soils. Terbuthylazine is only slightly mobile. Microbial degradation proceeds mainly by de-ethylation and hydroxylation, with eventual ring cleavage. DT50 30-60 d in biologically active soil.

Terbuthylazine

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