alpha-Cypermethrin

Agent Name
alpha-Cypermethrin
CAS Number
67375-30-8
Formula
C22-H19-Cl2-N-O3
Major Category
Pesticides
alpha-Cypermethrin formula graphical representation
Synonyms
(+-)-Alphamethrin; (1R cis S) and (1S cis R) enantiomeric isomer pair of alpha-Cyano-3-phenoxybenzyl-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylate; (1alpha(S*),3alpha)-(+-)-Cyano(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate; Aeralfam; Alfamethrin; Alfazot; Alfoxylate; Alphamethrin; Bestox; Cismix; Concord; Contest; Dominex; Fastac; Fastac 10 EC; Fendona; Mageos; Ultimate; WL 85871; alpha-Cypermetrin; [ChemIDplus]
Category
Pyrethrins/Pyrethroids
Description
Viscous yellowish brown semisolid mass; Colorless solid; [HSDB] Technical product is solid; [IPCS] White to pale yellow powder; [MSDSonline]
Sources/Uses
A highly active pyrethroid insecticide; Used to control a wide range of chewing and sucking insects in fruits, vegetables, vines, cereals, maize, cotton, rice, other crops, and forestry; Also used as insecticide for public health pests and animal ectoparasiticide; [HSDB]
Comments
Some technical formulations are strong eye irritants; Toxic neurological effects observed in high dose oral studies with rats include peripheral nerve injury; No significant adverse effects were observed from 90-day oral study with rats receiving 60 mg/kg; [HSDB] A respiratory tract irritant; [eChemPortal: ESIS] Effects in high-dose animal studies include liver changes, ataxia, and convulsions; [RTECS] Same ADI for alpha-Cypermethrin and Cypermethrin; [JECFA] See "Cypermethrin." See "Pyrethrum."
Restricted
Not currently registered with the EPA for use in the US; [HSDB]
Biomedical References

Exposure Assessment

Vapor Pressure
1.73E-07 mm Hg
Lethal Concentration
LC50 (rat) > 400 mg/m3/4h

Adverse Effects

Neurotoxin
Other CNS neurotoxin
Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases, Processes, and Activities Linked to This Agent

Processes

Industrial Processes with risk of exposure: