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Bifenthrin

General Description

  • Synonyms: (2-methyl-1,1-biphenyl-3-yl)-methyl-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylate; Talstar®
  • OSHA IMIS Code Number: B760
  • Chemical Abstracts Service (CAS) Registry Number: 82657-04-3
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GZ1227800
  • Chemical Description and Physical Properties:
    • off white to pale tan waxy solid with a very faint, slightly sweet odor
    • molecular weight: 422.87
    • vapor pressure: 1.80X10-7 mm Hg @ 25°C/4°C
    • molecular formula: C23H22ClF3O2
    • melting point: 69°C

Health Factors

  • Potential Symptoms: Large doses may cause incoordination, tremor, salivation, vomiting, diarrhea, and irritability to sound and touch
  • Affected Organs: CNS, skin, eyes
  • Notes:
    1. Bifenthrin is moderately toxic to mammals when ingested. The dose at which half of the test animal die, the LD50, for bifenthrin is about 54 mg/kg in female rats and 70 mg/kg in male rats.
    2. Pyrethroids are poisons that affect the electrical impulses in nerves, over stimulating nerve cells causing tremors and eventually causing paralysis.
  • Literature Basis:

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg sections, 20/40 mesh) with glass fiber filter enclosed
  • maximum volume: 480 Liters
  • maximum flow rate: 1.0 L/min
  • current analytical method: Gas Chromatography; GC/ECD
  • analytical solvent: Toluene
  • method reference: OSHA (In-House File)
  • method classification: Study

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