Procuct Name:Tribenuron-methyl 95%TC

CAS No.: 101200-48-0

Description:

Herbicide

HRAC  B WSSA  2; sulfonylurea

NOMENCLATURE
Chemical Abstracts name methyl2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)methylamino]carbonyl]amino]sulfonyl]benzoate 
CAS RN [101200-48-0] 
EEC no. 401-190-1

PHYSICAL CHEMISTRY
Composition Tech. is >95%.
Mol. wt. 395.4
M.f. C15H17N5O6S
Form Light brown, odourless solid.
M.p. 141 ºC
V.p. 5.2 ´ 10-5 mPa (25 ºC)
Henry 1.03 ´ 10-8 Pa m3 mol-1
S.g./density 1.5 (25 ºC)
Solubility In water 0.05 (pH 5), 2.04 (pH 7) (both in g/l, 20 ºC). In acetone 43.8, acetonitrile 54.2, carbon tetrachloride 3.12, ethyl acetate 17.5, hexane 0.028, and methanol 3.39 (all in mg/l, 25 °C).
Stability Stable at 45 ºC. On hydrolysis (45 ºC), stable at pH 8-10 but rapid loss at pH <7 or pH >12. Relatively unstable in most organic solvents.
pKa 5 

APPLICATIONS
Mode of action Rapidly absorbed by foliage and roots and translocated throughout the plant. Susceptible plants cease growth 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.
Uses Post-emergence control of broad-leaved weeds in spring and winter cereals, at 9-30 g/ha.
Specifications