Tribenuron / Metsulfuron methyl Selective Herbicides 101200-48-0 / 74223-64-6

Description:

Selective, post-emergence herbicide, acting primarily through foliar uptake, with little or no soil

activity. Symptoms of chlorosis appear in affected weeds in days with necrosis and death occu

ring after 10-25 days under optimal conditions.

Biochemistry Affects sensitive weeds through inhibition of the enzyme acetolactate synthase (AL

S). Inhibition of ALS leads to the rapid cessation of cell division and subsequent growth processe

s in plants. Mode of action Selective, post-emergence herbicide, acting primarily through foliar u

ptake, with little or no soil activity. Symptoms of chlorosis appear in affected weeds in days with

necrosis and death occuring after 10-25 days under optimal conditions. Uses Post-emergence c

ontrol of broad-leaved weeds in cereal crops, including wheat, barley, oats, rye and triticale, at

7.5-30 g/ha. Formulation types TB; WG. Selected products: 'Express' (USA) (DuPont); 'Gransta

r' (Europe) (DuPont); 'Pointer' (Germany) (DuPont); 'Oscar' (Vapco); 'Rapid' (Rotam); mixtures: '

Canvas' (+ metsulfuron-methyl+ thifensulfuron-methyl) (DuPont).

Quick Detail:

Product name: Tribenuron-methyl 222g/kg + Metsulfuron-methyl 111g/kg WDG

Pesticide category:Herbicide

CAS NO.: 101200-48-0; 74223-64-6

MF: C15H17N5O6S; C14H15N5O6S

Purity: 222g/kg+111g/kg WDG

Appearance (TC): Off-white powder

Appearance (33.3%WDG): Off-white granule

Brand name: Greenriver/ as per customers request.

Application:

Biochemistry Affects sensitive weeds through inhibition of the enzyme acetolactate synthase (AL

S). Inhibition of ALS leads to the rapid cessation of cell division and subsequent growth processe

s in plants. Mode of action Selective, post-emergence herbicide, acting primarily through foliar up

take, with little or no soil activity. Symptoms of chlorosis appear in affected weeds in days with ne

crosis and death occuring after 10-25 days under optimal conditions. Uses Post-emergence contr

ol of broad-leaved weeds in cereal crops, including wheat, barley, oats, rye and triticale, at 7.5-30

g/ha. Formulation types TB; WG. Selected products: 'Express' (USA) (DuPont); 'Granstar' (Europ

e) (DuPont); 'Pointer' (Germany) (DuPont); 'Oscar' (Vapco); 'Rapid' (Rotam); mixtures: 'Canvas' (+ metsulfuron-methyl+ thifensulfuron-methyl) (DuPont)

Specifications:

Active ingredient
Common name:	Tribenuron-methyl 222gkg + Metsulfuron-methyl 111gkg WDG
Chemical name:	methyl 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) methylamino]carbonyl]amino]sulfonyl]benzoate
Pesticide category:	Herbicide
CAS No:	101200-48-0; 74223-64-6
Molecular Formula:	C15H17N5O6S; C14H15N5O6S
Structural Formula:
Properties	Off-white powder.with a slight pungent odour.M.p.142oC.V.p.5.2*10-5mPa(25oC)S.g/destiny1.46(20oC) . In water 0.005(pH).2.04(pH7),18.3(pH9)(all in g/L,20oC). In acetone3.91*104,acetonitrile 4.64*104,ethyl acetate 1.63*104,n-heptane 1.63*104,n-heptane 20.8,methanol 2.59*103(all in mg/L,20oC). Form Colourless crystals; (tech., off-white solid, with a faint ester-like odour). M.p. 162 oC V.p. 3.3 ?10-7 mPa (25oC) KOW logP = 0.018 (pH 7, 25 oC) Henry 4.5 ?10-11 Pa m3 mol-1 (pH 7, 25oC S.g./density 1.447 (20oC) Solubility In water 0.548 (pH 5), 2.79 (pH 7), 213 (pH 9) (all in g/l, 25oC). In hexane 5.84 ?10-1, ethyl acetate 1.11 ?104, methanol 7.63 ?103, acetone 3.7 ?104, dichloromethane 1.32 ?105, toluene 1.24 ?103 (all in mg/l, 25oC. Stability Photolytically stable. Hydrolysis DT50 (25 oC), 22 d (pH 5), stable (pH 7 and 9). pKa 3.8 (20oC)
Mode of Action:	Selective, post-emergence herbicide, acting primarily through foliar uptake, with little or no soil activity. Symptoms of chlorosis appear in affected weeds in days with necrosis and death occuring after 10-25 days under optimal conditions.
Toxicity:	Oral: Acute oral LD50 for rats >5000 mg/kg. Skin and eye: Acute percutaneous LD50 for rabbits >5000 mg/kg. Non-irritating to skin and eyes (rabbits). Mildly sensitising to skin (guinea pig maximisation test), but not likely to be a dermal sensitisation risk to humans. Inhalation: LC50 (4 h) for rats >5.0 mg/l air.