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Cypermethrin - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information

Note: See Working with the Information on this Page section below for important notes about this data.

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Chemical ID
 Identifying information, including synonyms, ID numbers, use type, chemical classification, a link to a list of all products containing this chemical and a list of the top crops this pesticide is used on in California.
Poisoning Symptoms
 Signs and symptoms of poisoning, first aid, and links to treatment information for this chemical.
Toxicity
 Link to information on toxicity to humans, including carcinogenicity, reproductive and developmental toxicity, neurotoxicity, and acute toxicity.
Regulatory
 Links to world-wide registration status as well as regulatory information for the U.S. and California.
Water
 Water quality standards and physical properties affecting water contamination potential.
Ecotoxicity
 Toxicity to aquatic organisms.
Related Chems
 List of chemicals in the same family, including breakdown products, salts, esters, isomers, and other derivatives.
 

Chemical Identification and Use for Cypermethrin
Basic Identification Information About This Chemical
Chemical Name: Cypermethrin
CAS Number: 52315-07-8 (undefined stereochemistry)
66841-24-5 ([(1R)-1a(R*), 3b] )
U.S. EPA PC Code: 109704
CA DPR Chem Code: 2171
Molecular Weight: 416.3
Molecular Structure:
Use Type: Insecticide
Chem Class: Pyrethroid
View Related Chemicals
 
Additional Resources About This Chemical Class and Use Type
Historical Use of this Chemical
Top five crops and sites for this pesticide in California
Structural Pest Control   Landscape   Onions   Milk Production   Garlic  
View All Crops and Sites
 
Other Names for this Chemical
About Chemical Synonyms
(US EPA PC Code ) , 109704 (US EPA PC Code Text ) , 2171 (CA DPR Chem Code) ) , 52315-07-8 (CAS number) , 52315078 (CAS number without hyphens) , 597 (PDP Code) , 66841-24-5 (CAS number) , 66841245 , 66841245 (CAS number without hyphens) , Chinmix , Cipermetrin , Cipermetrina , Colt , Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, (R)-cyano(3-phenoxyphenyl)methyl ester, (1R, 3S)- , Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, cyano(3-phenoxyphenyl)methyl ester , Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, cyano(3-phenoxyphenyl)methyl ester, 1R-1alpha(R*),3beta- , cypermethin , Cypermethrin , CYPERMETHRIN (CA DPR Chem Code Text ) , Cypermethrin, d-trans-beta , Cypermethrine , d-trans-.beta.Cypermethrin , OMS 2002
 
Products Containing This Chemical
Current and historic U.S. registered products
View U.S. Products All Products Currently Registered Products
 

Signs and Symptoms of Cypermethrin Poisoning

NOTE! There may be other diseases and chemicals that have similar symptoms.

If you have a poisoning emergency in the United States call 1-800-222-1222.
If the victim has collapsed or is unconscious, call 911.

Cypermethrin is a Pyrethroid compound.

Report a Poisoning
Symptoms of Poisoning with Pyrethroid Compounds
Find Products Containing this Chemical

- Irritation of skin and eyes.
- Irritability to sound or touch, abnormal facial sensation, sensation of prickling, tingling or creeping on skin, numbness.
- Headache, dizziness, nausea, vomiting, diarrhea, excessive salivation, fatigue.
- In severe cases: fluid in the lungs and muscle twitching may develop. Seizures may occur and are more common with more toxic cyano-pyrethroids.

Source for Group Symptoms: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 8.
Treatment for Pyrethroid Poisoning

See: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 8, page 88.

 
Symptoms of Cypermethrin Exposure from the International Chemical Safety Cards (ICSC)

Report a Poisoning
View full ICSC Cards: English   Español   Française   Chinese   Dutch   Finnish   German   Hungarian   Japanese   Swahili   Thai   Urdu  
NOTE! PREVENT GENERATION OF MISTS!

Route of Exposure

Symptoms

First Aid
Inhalation Burning sensation. Cough. Dizziness. Headache. Nausea. Shortness of breath. Fresh air rest. Refer for medical attention.
Skin Redness. Burning sensation. Numbness. Tingling. Itching. Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain. First rinse with plenty of water for several minutes (remove contact lenses if easily possible) then take to a doctor.
Ingestion Abdominal pain. Convulsions. Vomiting. (Further see Inhalation). Rinse mouth. Refer for medical attention.
Notes for ICSC Information
Carrier solvents used in commercial formulations may change physical and toxicological properties. Ripcord Barricade Cymbush Agrothrin are trade names. Also consult publication Health and Safety Guide No. 22 Cypermethrin and Environmental Health Criteria No. 82 Cypermethrin of IPCS.
 

Toxicity Information for Cypermethrin

  Note: Information for many chemicals is incomplete and may not be fully representative of effects on humans. Why?

Summary Toxicity Information

PAN Bad Actor
Chemical 1 		Acute
Toxicity 2 		Carcinogen Cholinesterase
Inhibitor 		Ground
Water Contaminant 		Developmental or
Reproductive Toxin 		Endocrine
Disruptor
Not Listed
Possible No
Suspected
 
Indicates high toxicity in the given toxicological category. Indicates no available weight-of-the-evidence summary assessment. For additional information on toxicity from scientific journals or registration documents, see the "Additional Resources for Toxicity " section of the chemical detail page.
1. PAN Bad Actors are chemicals that are one or more of the following: highly acutely toxic, cholinesterase inhibitor, known/probable carcinogen, known groundwater pollutant or known reproductive or developmental toxicant. NOTE! Because there are no authoritative lists of Endocrine Disrupting (ED) chemicals, EDs are not yet considered PAN Bad Actor chemicals.
2. The acute toxicity reported on this page is of the pure chemical ingredient only and may not reflect the acute toxicity of individual pesticide products. To view acute toxicity of individual products, click on 'View Products' link in the 'Chemical Identification' section above.

Detailed Toxicity Information
This Chemical
Parent Chemical 
Acute Toxicity 2
 Cypermethrin Cypermethrin, zeta
WHO Acute Hazard
TRI Acute Hazard
Material Safety Data Sheets
Acute rating from U.S. EPA product label
U.S. NTP Acute Toxicity Studies
      View Studies
Cholinesterase Inhibitor		 Not Listed
Not Listed
Not Available
No Consensus Value
No NTP Studies

No 		Ib, Highly Hazardous
Not Listed
Not Available
No Consensus Value
No NTP Studies

No
2. The acute toxicity reported on this page is of the pure chemical ingredient only and may not reflect the acute toxicity of individual pesticide products. To view acute toxicity of individual products, click on 'View Products' link in the 'Chemical Identification' section above.
 
Cancer Information
 Cypermethrin Cypermethrin, zeta
IARC Carcinogens
U.S. NTP Carcinogens
California Prop 65 Known Carcinogens
U.S. EPA Carcinogens
TRI Carcinogen		 Not Listed
Not Listed
Not Listed
C, Possible
Not Listed		 Not Listed
Not Listed
Not Listed
C, Possible
Not Listed
 
Endocrine Disruption
 Cypermethrin Cypermethrin, zeta
Illinois EPA list
Keith list
Colborn list
Benbrook list
Danish Inert list
EU list		 Yes
Yes
Yes
Yes
Yes
Yes		 Susl
Yes
Yes
Yes
Yes
Yes
 
Reproductive and Developmental Toxicity
 Cypermethrin Cypermethrin, zeta
CA Prop 65 Developmental Toxin
U.S. TRI Developmental Toxin
CA Prop 65 Female Reproductive Toxin
CA Prop 65 Male Reproductive Toxin
U.S. TRI Reproductive Toxin 		Not Listed
Not Listed
Not Listed
Not Listed
Not Listed 		Not Listed
Not Listed
Not Listed
Not Listed
Not Listed
 
Chemicals of Special Concern
 Cypermethrin Cypermethrin, zeta
PAN Bad Actors
PAN Dirty Dozen list		 Not Listed
Not Listed		 Yes
Not Listed
 

Water Pollution Potential and Criteria for Cypermethrin

Water Pollution Potential

This Chemical
Parent Chemical
  Cypermethrin Cypermethrin, zeta
PAN Ground Water Contaminant Rating Insufficient Data Insufficient Data
 
Physical Property Data Related to Water Contamination Potential
Water Solubility (Avg, mg/L)
Adsorption Coefficient (Koc)
Hydrolysis Half-life (Avg, Days)
Aerobic Soil Half-life (Avg, Days)
Anaerobic Soil Half-life (Avg, Days) 		0.0090
85,572
179.0
60.0
- 		 
 

Water Standards and Criteria
This Chemical
Parent Chemical
WHO Water Quality Criteria
Description Unlikely to occur in drinking-water
Notes Notes: e
 

Regulatory Information for Cypermethrin

International Regulatory Status
This Chemical
Parent Chemical 
 
UNEP Persistent Organic Pollutant (POP)
UNEP Prior Informed Consent Chemical (PIC)
WHO Obsolete Pesticide		 Not Listed
Not Listed
Not Listed		 Not Listed
Not Listed
Not Listed
 

U.S. and California Regulatory Status
U.S. EPA Registered
U.S. EPA Hazardous Air Pollutant
U.S. EPA Minimum Risk Pesticide (25b list)

CA Registered
CA Groundwater Contaminant
CA Toxic Air Contaminant 		No
Not Listed
No

Yes
Not Listed
Not Listed 		Yes
Not Listed
No

Yes
Not Listed
Not Listed
 

Maximum Tolerance and Residue Levels
Codex Alimentarius
   (UN FAO Maximum Residue Limits)
U.S. Maximum Tolerance Levels
European Union Maximum Residue Levels 		Go to web site

Go to web site
Go to web site
 

Ecotoxicity for Cypermethrin

Note! Information for many chemicals is incomplete and may not be fully representative of effects on the environment. Why? Click on underlined terms for definitions and additional information.

Aquatic Ecotoxicity
All Toxic Effects for Organism Group
Organism Group Effects Noted
Amphibians Development, Enzyme(s), Mortality, Population
Annelida Mortality
AquaticPlants Accumulation, Biochemistry, Population
Crustaceans Behavior, Biochemistry, Development, Enzyme(s), Growth, Intoxication, Mortality, Population
Fish Accumulation, Behavior, Biochemistry, Cell(s), Development, Enzyme(s), Feeding Behavior, Genetics, Histology, Hormone(s), Injury, Intoxication, Mortality, Physiology, Population, Reproduction
Insects Accumulation, Behavior, Intoxication, Mortality, Population
Molluscs Accumulation, Behavior, Biochemistry, Enzyme(s), Genetics, Intoxication, Mortality, Physiology, Population, Reproduction
NematodesandFlatworms Mortality, Population
Phytoplankton Accumulation, Biochemistry, Mortality, Physiology, Population, Reproduction
Zooplankton Behavior, Biochemistry, Development, Enzyme(s), Feeding Behavior, Growth, Intoxication, Mortality, Population, Reproduction
~ Un-Assigned Accumulation, Behavior, Development, Enzyme(s), Genetics, Growth, Histology, Mortality, Physiology, Population
~Un-Assigned Population
View All Aquatic Ecotoxicity Studies and References
 
Summary of Acute Toxicity for Organism Group
Organism Group Average Acute Toxicity Acute Toxicity Range
Crustaceans Very Highly Toxic Very Highly Toxic
Fish Highly Toxic Moderate to Very High Toxicity
Insects Very Highly Toxic Very Highly Toxic
Molluscs Moderately Toxic Moderate to Very High Toxicity
Zooplankton Very Highly Toxic Very Highly Toxic
~ Un-Assigned Slightly Toxic Not Acutely Toxic to Very High Toxicity
View All Acute Summaries
 

Terrestrial Ecotoxicity
Summary of Acute Toxicity for Organism Group

Sorry, no honeybee acute toxicity data available for this chemical. Try related chemicals.

Note: Population-level effects on honeybees may occur even if a pesticide has low acute toxicity. For example, certain pesticides interfere with honeybee reproduction, ability to navigate, or temperature regulation, any of which can have an effect on long-term survival of honeybee colonies. The neonicotinoids, pyrethroids and keto-enol pesticides are some types of pesticides causing one or more of these effects.
Honeybee Chronic Toxicity

Sorry, no honeybee chronic toxicity data available for this chemical. Try related chemicals.

Related Chemicals for Cypermethrin
CAS Number Relation Reason Chemical Name Chem Detail Symptoms California Use Chem Use Type U.S. EPA Reg PAN Bad Actor
52315-07-8, 69865-47-0, 86752-99-0 Parent P Cypermethrin, zeta View View View Insecticide Yes Yes
52315-07-8, 66841-24-5 Related 6 Cypermethrin View View View Insecticide No Not Listed
67375-30-8 Related 6 Cypermethrin, alpha View View View Insecticide No Not Listed
Related 6 Cypermethrin, alpha View View View No Not Listed
65731-84-2, 72204-43-4, 65732-07-2, 83860-31-5 Related 6 Cypermethrin, beta View View View Insecticide Yes Not Listed
71697-59-1 Related 6 Cypermethrin, theta View View View Insecticide No Not Listed
 
Working with the Information on this Page

Click on underlined terms for definitions or go to the Pesticide Tutorial overview page.

Any underlined term with a book icon has additional information.

* Data marked with an asterisk indicates that this chemical is not explicitly listed on the corresponding list. Instead, it belongs to a group of chemicals that IS designated on the list. For example, if an agency assigns a classification of reproductive toxicant to "mercury compounds", that classification is applied to all mercury compounds in the PAN Pesticide database, which are then marked with an asterisk.

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Citation: Kegley, S.E., Hill, B.R., Orme S., Choi A.H., PAN Pesticide Database, Pesticide Action Network, North America (Oakland, CA, 2016), http:www.pesticideinfo.org.
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