Cyhalofop-butyl
| Specification | |
| Active Ingredient | 97%min |
| Appearance |
White powder |
| Physical and chemical properties | |
| Chemical Name | Butyl(R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoat |
| Empirical Formula | C20H20FNO4 |
| Molecular Weight | 357.4 |
| Structural Formula |
|
| Melting point | 49.5℃ |
| Solubility |
In water 0.44 (unbuffered), 0.46 (pH 5), 0.44 (pH 7.0) (all mg/l, 20 °C). In acetonitrile >250, n-heptane 6.06, n-octanol 16.0, dichloroethane >250, methanol >250, acetone >250, ethyl acetate >250 (all in g/l, 20 °C) |
| Vapor pressure |
5.3 x 10-2 mPa (25℃) |
| Formulations |
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97%TC, 10%EC, 20%EC
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| Application |
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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, see M. Ito et al., J. Weed Sci. & Tech. 43(2) 122-128 (1998).
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