Product Name

herbicide Cyhalofop-butyl

Function

Herbicide

Specification

  Cyhalofop-butyl  98%Tech, 20%EC, 20%OD WP, 15%EW, 10%EC

Chemical Name

(R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoate

CAS No.

122008-85-9; [122008-78-0] (for acid) 

Empirical Formula

C20H20FNO4 

Toxicology

Oral Acute oral LD50 for male and female rats, and for male and female mice >5000 mg/kg.  Skin and eye Acute percutaneous LD50 for male and female rats >2000 mg/kg.  Inhalation LC50 for rats >5.63 mg/l.  NOEL For male rats 0.8 mg/kg b.w. daily, female rats 2.5 mg/kg b.w. daily.  Other Non-mutagenic in Ames, DNA repair and micronucleus tests. Not teratogenic. In in vivo cytogenetic studies, no induction of structural chromosomal aberration observed. Rat and rabbit studies indicate cyhalofop-butyl is not teratogenic.  Toxicity class WHO (a.i.) U; EPA (formulation) II (EC)  

Applications

Mode of action   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.    Uses   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, see M. Ito et al., J. Weed Sci. & Tech. 43(2) 122-128 (1998).   Phytotoxicity   Rice is completely tolerant to due to rapid metabolism to the inactive diacid.

Package

200L/Drum, 20L/Drum, 5L/Drum,1L/Bottle, etc