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 (RTECS) Identification Number: GZ1227800
Chemical Description and Physical Properties: Off white to pale tan waxy solid with a very faint, slightly sweet odor
molecular formula: C23H22ClF3O2
molecular weight: 422.87
melting point: 69 °C
vapor pressure: 1.80X10-7 mm Hg @ 25 °C/4 °C
Potential symptoms: Large doses may cause incoordination, tremor, salivation, vomiting, diarrhea, and irritability to sound and touch.
Affected organs: CNS, skin, eyes
- 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.
- Pyrethroids are poisons that affect the electrical impulses in nerves, over stimulating nerve cells causing tremors and eventually causing paralysis.
Monitoring Methods used by OSHA
- Environmental Health Criteria 99: Cyhalothrin, World Health Organization (WHO), p.13 (1990).
- Other Insecticides, Acaricides, and Repellents - Pyrethroids, Recognition and Management of Pesticide Poisonings, Fifth Edition, Chapter 8, Environmental Protection Agency (EPA), (1999). [77 KB, PDF]
- Toxicological Profile for Pyrethrins and Pyrethroids, Agency for Toxic Substances and Disease Registry (ATSDR) (September 2003). [1.6 MB, PDF, 328 pages]
Laboratory Sampling/Analytical Method:
sampling media: OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg sections, 20/40 mesh) with glass fiber filter enclosed
analytical solvent: Toluene
maximum volume: 480 Liters maximum flow rate: 1.0 L/min
current analytical method: Gas Chromatography; GC/ECD
method reference: In-house file
method classification: Study
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