Cyfluthrin and beta-cyfluthrin are two active substances differing only in their isomeric composition. While cyfluthrin consists of four enantiomeric pairs of diastereoisomers, beta-cyfluthrin represents the biologically more active diastereoisomers (isomers II and isomers IV). http://www.noaelproject.it/content/peer-review-pesticide-risk-assessment-active-substance-beta%E2%80%90cyfluthrin-0
Cyfluthrin. May 17, 2001, Pesticide Tolerances for Emergency …
Webcyfluthrin is an enrichment of these isomers resulting in a product with about 97% of the two most insecticidally active isomers (Reference 4). The EPA expects that the environmental fate and ecological effects of cyfluthrin and beta-cyfluthrin are similar, so they used data for cyfluthrin whenever specific data for beta-cyfluthrin was lacking. WebLowest relevant oral NOAEL 90-day for dog – 60ppm (1,5mg/kg/day). Dogs exhibited vomiting, ... decreased foetal weights in rats. Ecological effects Beta-cyfluthrin is highly toxic to fish (acute LC50 0,068 µg/l, long term toxicity NOEC 0,01 µg/l) and aquatic invertebrates (acute 48hour EC50 0,00029mg/l) and moderately toxic to algae (acute flamingo bird facts for kids printable
MAXIMUM RESIDUE LIMITS (MRLs) AND RISK MANAGEMENT …
WebIn the first study, cyfluthrin was administered via inhalation for 5 days per week for 3 weeks. The resulting NOAEL was 1.4 mg/ m3, based on treatment-related behavioral … WebBeta-cyfluthrin (a form of cyfluthrin) has been found to be twice as toxic as cyfluthrin if eaten or breathed in.3 Metabolites of cyfluthrin are less toxic than cyfluthrin itself.11 What happens to cyfluthrin when it enters the body Cyfluthrin is poorly absorbed through the skin. Around 1% may be absorbed following a dermal exposure.3 If eaten, WebThis NOAEL (2.5 mg/kg/day) and a UF of 100 was used in deriving the RfD (0.025 mg/kg/day) and the RfD does not provide protection for infants and children. v. Conclusion. There is a complete toxicity database for cyfluthrin and exposure data are complete or are estimated based on data that reasonably accounts for potential exposures. flamingo birthday cake images