COMMON NAME:Tribenuron-methyl
    CHEMICAL NAME:2-[4-methoxy-6-methyl-1, 3,5-triazin-2-yl (methyl) carbamoylsulfamoyl] benzoate

    CHEMICAL AND PHYSICAL PROPERTIES:AppearanceLight brown,odourless solid. M.p.141℃ V.p.5.2×10 -5 mPa(25℃) KowlogP=-0.44(PH 7) S.g./density1.5(25℃). SolubilityIn water 0.05(PH 5);2.04(PH 7)(both in g/L 20℃).In acetone 43.8,acetonitrile 54.2,carbon tetrachloride 3.12,ethyl acetate 17.5,hexane 0.028,and methanol 3.39(all in g/L,25℃). StabilityOn hydrolysis (45℃),stable at PH 8-10 but rapid loss at PH<7 or PH>12.Relatively unstable in most organic solvents.

    TOXICOLOGY: OralAcute oral LD 50 for rats > 5000mg/kg. Skin and eyeAcute percutaneous LD 50 for rabbits >2000mg/kg.Non-irritating to skin (rabbits); mild (reversible) irritant to eyes. Mildly sensitising to skin. (guinea pig maximization test). InhalationLC 50 (4h) for rats >5.0mg/L air. NOEL(2 y) for rats 25 ppm diet;(18 mo) for mice 200 ppm diet.Non-teratogenic in rats at 20 mg/kg daily. ADI0.011 mg/kg. BirdsAcute oral LD 50 for bobwhite quail>2250 mg/kg .Eight-day dietary LC 50 for bobwhite quail and mallard ducks>5620mg/kg. FishLC 50 (96 h)for bluegill sunfish and rainbow trout>1000mg/L. BeesLD 50 for honeybees>100ug/bee. WormsLD 50 for earthworms>2000ppm. DaphniaLC 50 (48 h)720mg/L(unfed);1000mg/L(fed).

    PACKING:25KG carton drum,or on the client's requirement.

    APPLICATION:Branched chain amino acid synthesis (acetolactate synthase or ALS) inhibitor.Acts by inhibiting bilsynthesis of the essential amino acids valine and isoleucine,hence stopping cell division and plant groth.Rapidly absorbed by foliage and roots and translocated throughout the plant.Susceptible plants cease grough almost immediately after post-emergence treatment and are killed in 7-21 days.Surfactants increase the activity of tribenuron-methyl on certain broad-leaved weeds.Post emergence control of broad-leaved weeds in spring and winter cereals,at 9-30g/ha.

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