Common name:
Cyhalofop-butyl;
IPUAC name:
butyl (R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propionate;
Chemical Abstracts name:
butyl (2R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoate;
Cas RN:
122008-85-9;
Development codes:
DE-537;
PHYSICAL CHEMISTRY
Molecule weight:
357.39;
Molecule frame:
C20H20FNO4;
Form:
Light yellow homogeneous liquid;
Melt point:
5.5-49.5℃;
Vapour pressure:
5.3 X 10-5 pa (25 ℃);
Kow:
LogP= 3.3158 at 25 °C;
Henry:
2.79? 10-4 Pa m3 mol-1 (calc. ) ;
S.g/density:
1.17g/cm3;
Solubility:
0.7mg/L in water;43.7% in xylene
Stability:
Stable at pH 4, hydrolysed slowly at pH 7.
APPLICATIONS
Post-emergence herbicide with foliar uptake only and no soil activity. A systemic herbicide that is readily absorbed by plant tissue, is moderately phloem-mobile and accumulates in meristematic regions. Grass weeds cease growth immediately after treatment, with yellow patches appearing within 2-3 days to one week, leading to necrosis and death of the whole plant within 2 to 3 weeks. For post-emergence control of grass weeds in rice. Applied at 75-100 g/ha in tropical rice and 180-310 g/ha in temperate rice. For selectivity in Poaceae species.
Formulation types:
10%EC.