Agent Name

Cyhalothrin

CAS Number

68085-85-8

Formula

C23-H19-Cl-F3-N-O3

Major Category

Pesticides

Synonyms

(1alpha,3alpha(Z))-(+-)-Cyano-(3-phenoxyphenyl)methyl 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate; (RS)-alpha-Cyano-3-phenoxybenzyl (Z)-(1RS,3RS)-(2-chloro-3,3,3- trifluoropropenyl)-2,2-dimethylcyclopropanecarboxylate; (RS)-alpha-Cyano-3-phenoxybenzyl (Z)-(1RS,3RS)-3-(2-chloro-3,3,3-trifluoropropenyl)-2,2-dimethylcyclopropanecarboxylate; 3-(2-Chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylic acid cyan(3-phenoxyphenyl)methyl ester; Cyhalothrine [ISO-French]; Grenade; ICI 146814; Matador; PP 563; Saber; Scimitar; [ChemIDplus] UN2902

Category

Pyrethrins/Pyrethroids

Description

Yellow-brown viscous liquid (technical product); [ICSC]; [HSDB] Colorless solid; [CAMEO]

Sources/Uses

Used as insecticide and acaricide; [Merck Index] Used in agriculture and for public and animal health; [ICSC]

Comments

Commercial product is 95% cis isomer; A synthetic pyrethroid; [Merck Index] A skin, eye, and respiratory tract irritant; May cause skin sensitization; "The substance may cause effects on the nerve terminals of the skin , resulting in subjective facial skin sensation characterized by tingling, burning or numb sensation." [ICSC] Caused weight loss in rats fed 250 mg/kg/day for 90 days; [HSDB] A moderate skin sensitizer in guinea-pig testing; [Reference #1] See "Pyrethrum."

Restricted

Not registered as a pesticide for use in the US; [HSDB] Banned in the EU for use as pesticide for plant protection; [eChemPortal: ESIS]

Reference Link

INCHEM: Cyhalothrin (EHS 99 - 1990)

Exposure Assessment
Vapor Pressure

7.5E-9 mm Hg

Lethal Concentration

LC50 (rat) = 83 mg/m3/4h

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Pesticide, liquid, toxic, n.o.s."

Adverse Effects
Skin Sensitizer

Yes

Neurotoxin

Other CNS Neurotoxin

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: