Bifenthrin

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ImageFile=Bifenthrin-2D-skeletal.pngImageSize=200px
IUPACName=2-Methyl-3-phenylphenyl)methyl (1"S",3"S")-3- [("Z")-2-chloro-3,3,3-trifluoroprop-1-enyl] -2,2-dimethylcyclopropane-1-carboxylate
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Section1= Chembox Identifiers
CASNo=82657-04-3
PubChem=10938769
SMILES=CC1=C(C=CC=C1COC(=O) [C@H] 2 [C@H] (C2(C)C)C=C(C(F)(F)F)/Cl)C3=CC=CC=C3
Section2= Chembox Properties
Formula=C₂₃H₂₂ClF₃O₂
MolarMass=422.87 g/mol
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Section3= Chembox Hazards
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Bifenthrin is a pyrethroid insecticide that affects the nervous system of insects. Products containing bifenthrin include Talstar, Capture, Brigade, Bifenthrine, and Ortho Home Defense Max.

The Bifenthrin Molecule, a 4th generation pyrethroid, was discovered and developed by FMC Corporation Pty Ltd it. Bifenthrin is virtually insoluble in water with a solubility of 0.1 mg/l. Given its low solubility, bifenthrin has high persistence in soil (half life = 7 days - 8 months) and consequently it is the longest residual termiticide currently registered on the market today.

The material safety data sheet (MSDS) for FMC Corp.'s Biflex (Bifenthrin's trade name) shows carcinogenic qualities to be virtually zero. It is highly toxic to fish, since it, like most pyrethroids, is also an ATPase inhibitor. Aquatic vertebrates are much more sensitive to ATPase inhibitors than terrestrial vertebrates due to their high dependence on ATP synthesis in the gills to maintain osmotic balance.

The United States Environmental Protection Agency (EPA) once classified bifenthrin in the past as a class C, although it no longer does so. It is probable that a one-time class "C" carcinogen (possible human carcinogen) designation was based on older data and lack of studies.
* [http://www.kellysolutions.com/erenewals/documentsubmit/KellyData%5COK%5Cpesticide%5CMSDS%5C81824%5C81824-5%5C81824-5_Maxxthor_5C_9_23_2005_3_23_00_PM.pdf USA MSDS]
* [http://www.rentokil.co.nz/images/pdf/Insecticide/Maxxthor.pdf Australian MSDS]
* [http://www.epa.gov/EPA-PEST/2002/September/Day-27/p24484.htm EPA Studies on Bifenthrin: (2002)]

Based on these risk assessments, EPA concludes that there is a reasonable certainty that no harm will result to the general population, and to infants and children from aggregate exposure to bifenthrin residues.

External links

* [http://npic.orst.edu/factsheets/pyrethrins.pdf Pyrethrins and Pyrethroids Fact Sheet - National Pesticide Information Center]
* [http://extoxnet.orst.edu/pips/bifenthr.htm Bifenthrin Pesticide Information Profile - Extension Toxicology Network]