Cyhalofop-butyl

Chemical Name: Butyl (2R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoate

Formula: C20H20FNO4

Molecular Weight: 357.38

CAS No.: 122008-85-9

Description:

Appearance: White crystalline powder

Melting Point: 50C.

Vapour Pressure: 0.053 MPa(25C).

Stability: Insoluble in water, soluble in most organic solvents. Stable at pH 4, hydrolysed slowly at pH 7.

Specification:

Content: 95 %min

Loss on Drying: ≤ 2 %

pH Value: 4.5 -7.0

Formulation: 98%TC, 10%ME, 15%ME, 20%EC, 18%EC, 30%EC, 25%EW, 20%WP, 20%OF
Toxicity & Irritation
Rat LD50 oral: >5000 mg/kg bw
Rat LD50 dermal: >2000 mg/kg bw
Rat LC50 inhalation: >5.63 mg/l/4hr (dust; Whole body exposure)
Skin irritation: Non-irritant
Eye irritation: Non-irritant.
Skin sensitization (test method used and result): Non-sensitiser

Uses:

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.