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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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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. | |
Signs and symptoms of poisoning, first aid, and links to treatment information for this chemical. | |
Link to information on toxicity to humans, including carcinogenicity, reproductive and developmental toxicity, neurotoxicity, and acute toxicity. | |
Links to world-wide registration status as well as regulatory information for the U.S. and California. | |
Water quality standards and physical properties affecting water contamination potential. | |
Toxicity to aquatic organisms. | |
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 |
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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: |
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Chem Class: |
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Additional Resources About This Chemical Class and Use Type | |
Historical Use of this ChemicalTop five crops and sites for this pesticide in California | |
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Other Names for this Chemical | |
(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 ChemicalCurrent and historic U.S. registered products | |
Signs and Symptoms of Cypermethrin Poisoning |
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NOTE! There may be other diseases and chemicals that have similar symptoms. |
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If you have a poisoning emergency in the United States call 1-800-222-1222. |
Cypermethrin is a Pyrethroid compound. |
Symptoms of Poisoning with Pyrethroid Compounds |
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- Irritation of skin and eyes. |
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Source for Group Symptoms: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 8. |
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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) |
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View full ICSC Cards: English Español Française Chinese Dutch Finnish German Hungarian Japanese Swahili Thai Urdu | |||
NOTE! PREVENT GENERATION OF MISTS! |
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Route of Exposure |
Symptoms |
First Aid |
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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 |
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Summary Toxicity Information | ||||||
PAN Bad Actor Chemical 1 | Acute Toxicity 2 | Carcinogen | Cholinesterase Inhibitor | Ground Water Contaminant | Developmental or Reproductive Toxin | Endocrine Disruptor |
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Not Listed | ![]() |
Possible | No | ![]() |
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Suspected |
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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 |
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WHO Acute Hazard TRI Acute Hazard Material Safety Data Sheets Acute rating from U.S. EPA product label U.S. NTP Acute Toxicity 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 |
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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 |
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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 |
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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 |
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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 |
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Cypermethrin | ![]() |
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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 - |
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Water Standards and Criteria |
This Chemical |
Parent Chemical |
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WHO Water Quality Criteria |
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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 |
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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 |
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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 |
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Ecotoxicity for Cypermethrin |
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Aquatic Ecotoxicity |
All Toxic Effects for Organism Group |
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Organism Group | Effects Noted |
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Development, Enzyme(s), Mortality, Population |
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Mortality |
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Accumulation, Biochemistry, Population |
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Behavior, Biochemistry, Development, Enzyme(s), Growth, Intoxication, Mortality, Population |
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Accumulation, Behavior, Biochemistry, Cell(s), Development, Enzyme(s), Feeding Behavior, Genetics, Histology, Hormone(s), Injury, Intoxication, Mortality, Physiology, Population, Reproduction |
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Accumulation, Behavior, Intoxication, Mortality, Population |
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Accumulation, Behavior, Biochemistry, Enzyme(s), Genetics, Intoxication, Mortality, Physiology, Population, Reproduction |
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Mortality, Population |
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Accumulation, Biochemistry, Mortality, Physiology, Population, Reproduction |
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Behavior, Biochemistry, Development, Enzyme(s), Feeding Behavior, Growth, Intoxication, Mortality, Population, Reproduction |
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Accumulation, Behavior, Development, Enzyme(s), Genetics, Growth, Histology, Mortality, Physiology, Population |
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Population | ![]() |
Summary of Acute Toxicity for Organism Group |
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Organism Group | Average Acute Toxicity | Acute Toxicity Range |
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Very Highly Toxic | Very Highly Toxic |
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Highly Toxic | Moderate to Very High Toxicity |
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Very Highly Toxic | Very Highly Toxic |
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Moderately Toxic | Moderate to Very High Toxicity |
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Very Highly Toxic | Very Highly Toxic |
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Slightly Toxic | Not Acutely Toxic to Very High Toxicity |
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Terrestrial Ecotoxicity |
Summary of Acute Toxicity for Organism Group |
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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 |
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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 |
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52315-07-8, 69865-47-0, 86752-99-0 | Parent | P | Cypermethrin, zeta | ![]() |
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Insecticide | Yes | Yes |
52315-07-8, 66841-24-5 | Related | 6 | Cypermethrin | ![]() |
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Insecticide | No | Not Listed |
67375-30-8 | Related | 6 | Cypermethrin, alpha | ![]() |
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Insecticide | No | Not Listed |
Related | 6 | Cypermethrin, alpha | ![]() |
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No | Not Listed | ||
65731-84-2, 72204-43-4, 65732-07-2, 83860-31-5 | Related | 6 | Cypermethrin, beta | ![]() |
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Insecticide | Yes | Not Listed |
71697-59-1 | Related | 6 | Cypermethrin, theta | ![]() |
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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 * 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. |