English name：CYFLUMETOFEN

Chemical name：2-Methoxyethyl 2-(4-tert-butylphenyl)-2-cyano-3-oxo-3-[2-(trifluoromethyl)phenyl]propanoate

Other name：Sultan

Molecular formula：C₂₄H₂₄F₃NO₄

Molecular weight：447.45

Physical and chemical property：

The technical product is a white solid. Melting point: 77.9 ℃～81.7 ℃. Boiling point: 269.2 ℃ (2.2 KPa). Vapor pressure ＜ 5.9 × 10-3 mPa（25℃）。 KOW lgP 4.3 (HPLC method, OECD117). The relative density is 1.229 (20 ℃). Solubility in water: 0.0281 mg/L (pH=7, 20 ℃); Solubility in other solvents (g/L, 20 ℃): n-hexane 5.23, methanol 99.9, acetone>500, dichloromethane>500, ethyl acetate>500, toluene>500. Stability: stable in weak acidic medium, but unstable in alkaline medium, DT50 (25 ℃) in water is stable at 293 ℃

Toxicology：

The acute oral LD50 of female rats＞2000 mg/kg. Acute percutaneous LD50 of rats ＞ 5000 mg/kg. No irritation to rabbit eyes and skin, but sensitization to guinea pig skin. The rats inhaled LC50 ＞2.65 mg/L.

Features：

Cyflumetofen is a new acaricide of benzoyl acetonitrile. It has no cross resistance with the existing insecticides. Cyflumetofen has a low effect on preventing the hatching of spider eggs, but it has high activity in all growth stages, especially in young mites. The LC50 values for eggs, adults, young mites, first stage nymphs and second stage nymphs are 30 mg/L, 4.8 mg/L, 0.9 mg/L, 1.0 mg/L and 1.9 mg/L respectively, The LC50 value of the young mites before and after hatching is 2.5 mg/L, which is harmless to various plants and is very safe for non-target organisms such as mammals, aquatic organisms, beneficial organisms and natural enemies.

Mainly used for citrus spider. It is effective to cotton spider and red spider with neoplastic skin, and can prevent and control red leaf mites and whole claw leaf mites. To diamondback moth, Spodoptera litura, Chilo suppressalis, rice planthopper, peach aphid and other pests.

Formulation：

20%SC