1 formulation 95%TC 50%WP 50%SC 2 ISO 9001 FAO standard 3 strong product with best quality and competitive price CAS Registry Number :330-55-2 Properties: Fine flakes or coarse powder. Melting range 86-91C. Slight solubility in aliphatic hydrocarbons, moderate in ethanol and common aromatic solvents. Uses: Selective weed control in asparagus, carrots, celery (posttransplant), cotton (layby), field corn, parsnips, potatoes, sorghum, soybeans, sweet corn (layby), wheat (Pacific Northwest), and for short-term control of annual weeds in noncrop areas such as roadsides and fence rows. Toxicity: Tech in starch mucilage (Rat, female): Oral LD50 4000 mg/kg Type of formulation: 95% Tech 50% 80% WP 50% SC Packing Details :25kg Drum, 200L Iron Drum, or follow your needs
PHYSICAL CHEMISTRY Composition Tech. is ³94% pure. Mol. wt. 249.1 M.f. C9H10Cl2N2O2 Form Colourless crystals. M.p. 93-95 ºC V.p. 0.051 mPa (20 ºC); 7.1 mPa (50 ºC) (EC method) KOW logP = 3.00 Henry 2.0 ´ 10-4 Pa m3 mol-1 (20 °C) S.g./density 1.49 (20 ºC) Solubility In water 63.8 mg/l (20 ºC, pH 7). In acetone 500, benzene, ethanol 150, xylene 130 (all in g/kg, 25 ºC). Readily soluble in dimethylformamide, chloroform, and diethyl ether. Moderately soluble in aromatic hydrocarbons. Sparingly soluble in aliphatic hydrocarbons. Stability Stable at m.p. and in aqueous solution at pH 5, 7 & 9; DT50 945 d at all three pH values.
APPLICATIONS Biochemistry Photosynthetic electron transport inhibitor at the photosystem II receptor site. Mode of action Selective systemic herbicide, absorbed principally by the roots but also by the foliage, with translocation primarily acropetally in the xylem. Uses Pre- and post-emergence control of annual grass and broad-leaved weeds, and some seedling perennial weeds, in asparagus, artichokes, carrots, parsley, fennel, parsnips, herbs and spices, celery, celeriac, onions, leeks, garlic, potatoes, peas, field beans, soya beans, cereals,maize, sorghum, cotton, flax, sunflowers, sugar cane, ornamentals, established vines, bananas, cassava, coffee, tea, rice, peanuts, ornamental trees and shrubs, and other crops. Formulation types EC; SC; WP.
MAMMALIAN TOXICOLOGY Oral Acute oral LD50 for rats 1500-4000 mg/kg. Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Mild skin irritant (rabbits); not a skin sensitiser (guinea pigs). Inhalation LC50 (4 h) for rats >6.15 mg/l air. NOEL (1 y) for dogs 25 ppm (0.9 mg/kg b.w.). Tumour promoter in rats. ADI 0.008 mg/kg b.w. Toxicity class WHO (a.i.) III (Table 5); EPA (formulation) III EC hazard R40| Xn; R22, R48/22| N; R50, R53
ECOTOXICOLOGY Birds Acute oral LD50 for bobwhite quail 940 mg/kg. Dietary LC50 (8 d) for mallard ducklings 3083 ppm, >5000 mg/kg (values from separate studies), ring-necked pheasants 3438 ppm, Japanese quail >5000 ppm diet. Fish LC50 (96 h) for rainbow trout 3.15, sheepshead minnow 0.89 mg/l; NOEC 0.49 mg/l. Daphnia LC50 (48 h) 0.75 mg/l, 0.12 mg/l (separate studies). Other aquatic spp. LC50 (96 h) for mysid shrimp (Mysidopsis bahia) 3.4 mg/l; NOEC 2.1 mg/l. Bees LD50 (oral) >1600 mg/g bee b.w. Worms LC50 for Eisenia foetida >1000 mg/kg soil. Other beneficial spp. Harmless to other beneficial arthropods.
ENVIRONMENTAL FATE Animals The major metabolites arise from demethylation and demethoxylation. Plants In plants, metabolism involves demethylation and demethoxylation. Soil/Environment Microbial degradation is the primary factor in disappearance from soil. Half-life under field conditions is c. 2-5 mo (F. Kempson-Jones & R. J. Hance, Pestic. Sci., 1979, 10, 449). In soil, DT50 38-67 d. Soil adsorption Koc 500-600.