WebThe nature of the toxic effects caused by cyfluthrin and its enriched isomer, beta-cyfluthrin are discussed in Table 1 of this unit as well as the no-observed-adverse-effect-level (NOAEL) and the lowest- observed-adverse-effect-level (LOAEL) from the toxicity studies reviewed. Beta-cyfluthrin is an enriched isomer of cyfluthrin. 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.
Modification of the existing MRLs for beta-cyfluthrin ... - NOAEL …
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). 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 c \u0026 d recycling south pittsburg tn
Peer review of the pesticide risk assessment of the active …
WebThe chemical trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylic acid is a metabolite formed from trans-permethrin, trans-cypermethrin and trans-cyfluthrin. The cis … 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 … c \u0026 d plumbing inc