Produit Nom:Pyrazosulfuron-ethyl 95%TC

CAS No.: 98398-04-9

Description:

Herbicide

HRAC  B WSSA  2; sulfonylurea

NOMENCLATURE  
Common name pyrazosulfuron (BSI, draft E-ISO, (m) draft F-ISO)
CAS RN [98389-04-9]   
PHYSICAL CHEMISTRY
Mol. wt. 386.3 
M.f. C12H14N6O7S
Form Colourless crystals. 
M.p. 177.8-179.5 °C 
V.p. 4.2 ´ 10-5 mPa (25 ºC) 
KOW logP = 1.3 (unstated pH) 
S.g./density 1.46 (20 ºC) 
Solubility In water 9.96 mg/l (20 ºC). In methanol 4.32, hexane 0.0185, benzene 15.6, chloroform 200, acetone 33.7 (all in g/l, 20 ºC). 
Stability Stable at 50 ºC for 6 months. Relatively stable at pH 7. Unstable in acidic or alkaline media. 
pKa 3.7 
APPLICATIONS
Mode of action Systemic herbicide, absorbed by roots and/or leaves and translocated to the meristems. 
Uses Control of annual and perennial broad-leaved weeds and sedges, pre- or post-emergence in wet-sown and transplanted rice crops, at 15-30 g/ha.
Specifications