PAN Pesticides Database - Chemicals

Imidacloprid - 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 Imidacloprid

Basic Identification Information About This Chemical
Chemical Name: Imidacloprid
CAS Number: 105827-78-9
138261-41-3
U.S. EPA PC Code: 129059 (Same as US EPA PC Code 129099)
129099 (Same as US EPA PC Code 129059)
CA DPR Chem Code: 3849
Molecular Weight: 255.7
Molecular Structure:
Use Type: Insecticide
Chem Class: Neonicotinoid
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
Wine Grapes   Table and Raisin Grapes   Structural Pest Control   Oranges   Tomatoes for Processing  
View All Crops and Sites
 
Other Names for this Chemical
About Chemical Synonyms
(2E)-1-[(6-Chloro-3-pyridinyl)methyl]-N-nitro-2-imidazolidinimine , 1-((6-Chloro-3-pyridinyl)methyl)-4,5-dihydro-N-nitro-1H-imidazol-2-amine , 1-((6-Chloro-3-pyridinyl)methyl)-N-nitro-2-imidazolidinimine , 105827-78-9 (CAS number) , 105827789 , 105827789 (CAS number without hyphens) , 129059 (US EPA PC Code Text (Same as US EPA PC Code 129099)) , 129099 (US EPA PC Code Text (Same as US EPA PC Code 129099)) , 138261-41-3 (CAS number) , 138261413 (CAS number without hyphens) , 1H-Imidazol-2-amine, 1-((6-chloro-3-pyridinyl)methyl)-4,5-dihydro-N-nitro- , 1H-Imidazol-2-amine, 1-((6-chloro-3-pyridinyl)methyl)-4,5-dihydro-N-nitro- (105827-78-9) , 2-Imidazolidinimine, 1-((6-chloro-3-pyridinyl)methyl)-N-nitro- (138261-41-3) , 2-Imidazolidinimine, 1-((6-chloro-3-pyridinyl)methyl)-N-nitro- (138261-41-3) , 3849 (CA DPR Chem Code) ) , 967 (PDP Code) , Admire , BAY NTN 33893 , Confidor 2 flowable , Confidor 2.5% granular , Imidacloprid , IMIDACLOPRID (CA DPR Chem Code Text ) , Imidaclopride , Imidacloprido , Imidakloprid , NTN 33893 , NTN 33893 (see 129099 for correct chemical name) , Yes (US EPA PC Code (Same as US EPA PC Code 129099)) , Yes (US EPA PC Code (Same as US EPA PC Code 129099))
 
Products Containing This Chemical
Current and historic U.S. registered products
View U.S. Products All Products Currently Registered Products
 

Signs and Symptoms of Imidacloprid 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.

Symptoms of Imidacloprid Exposure

- Skin and eye irritation.
- Fatigue, twitching, cramps, and muscle weakness including the muscles necessary for breathing.

Source for Symptoms: Extension Toxicology Network (EXTOXNET), Oregon State University. (no date given) (ExToxNet)

First Aid for Imidacloprid Poisoning

No first aid available for this particular chemical. Get medical aid.

Source for First Aid: ()

 
 

Toxicity Information for Imidacloprid

  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 Moderate Not Likely No Potential
 
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

Acute Toxicity 2
Imidacloprid
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
II, Moderately Hazardous
Not Listed
Moderately Toxic
Moderately Toxic
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
Imidacloprid
IARC Carcinogens
U.S. NTP Carcinogens
California Prop 65 Known Carcinogens
U.S. EPA Carcinogens
TRI Carcinogen
Not Listed
Not Listed
Not Listed
E, Unlikely
Not Listed
 
Endocrine Disruption
Imidacloprid
Illinois EPA list
Keith list
Colborn list
Benbrook list
Danish Inert list
EU list
Not Listed
Not Listed
Not Listed
Not Listed
Not Listed
Not Listed
 
Reproductive and Developmental Toxicity
Imidacloprid
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
 
Chemicals of Special Concern
Imidacloprid
PAN Bad Actors
PAN Dirty Dozen list
Not Listed
Not Listed
 

Water Pollution Potential and Criteria for Imidacloprid

Water Pollution Potential

PAN Ground Water Contaminant Rating Potential
 
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)
514.0
262.0
30.0
997.0
27.0
 
 

Water Standards and Criteria

Canadian Water Quality Guidelines for the Protection of Aquatic Life
g/L unless noted  
Fresh Water Guidelines 0.23 Notes: c
Salt Water Guidelines 0.65 Notes: c
 

Regulatory Information for Imidacloprid

International Regulatory Status

 
UNEP Persistent Organic Pollutant (POP)
UNEP Prior Informed Consent Chemical (PIC)
WHO Obsolete Pesticide
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
Yes
Not Listed
No

Yes
Potential
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 Imidacloprid

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 Genetics, Mortality, Population
Annelida Behavior, Feeding Behavior, Intoxication, Mortality
Crustaceans Intoxication, Mortality
Fish Development, Growth, Mortality, Population
Insects Development, Enzyme(s), Feeding Behavior, Genetics, Mortality, Population
TerrestrialPlants Growth, Morphology, Population
Zooplankton Biochemistry, Enzyme(s), Intoxication, Mortality, Population, Reproduction
~ Un-Assigned Immunological, Intoxication, Mortality
View All Aquatic Ecotoxicity Studies and References
 
Summary of Acute Toxicity for Organism Group
Organism Group Average Acute Toxicity Acute Toxicity Range
Amphibians Not Acutely Toxic Not Acutely Toxic
Annelida Highly Toxic Highly Toxic
Crustaceans Moderately Toxic Moderate Toxicity
Fish Not Acutely Toxic Not Acutely Toxic
Insects Very Highly Toxic High to Very High Toxicity
Zooplankton Slightly Toxic Not Acutely Toxic to Very High Toxicity
~ Un-Assigned Highly Toxic Moderate to Very High Toxicity
View All Acute Summaries
 

Terrestrial Ecotoxicity

Summary of Acute Toxicity for Organism Group
Organism Group Average Acute Toxicity Acute Toxicity Range
HoneybeesHighly ToxicHighly Toxic
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
Organism Group Chronic Toxicity  
HoneybeesYes  

Related Chemicals for Imidacloprid

CAS Number Relation Reason Chemical Name Chem Detail Symptoms California Use Chem Use Type U.S. EPA Reg PAN Bad Actor
105827-78-9, 138261-41-3 Parent P Imidacloprid View View View Insecticide Yes Not Listed
5326-23-8 Related 5a 6-Chloronicotinic acid View View View Breakdown product No Not Listed
Related 5a Imidacloprid guanidine View View View Breakdown product No Not Listed
Related 5a Imidacloprid olefin View View View Breakdown product No Not Listed
Related 5a Imidacloprid olefinic-guanidine View View View Breakdown product No Not Listed
Related 5a Imidacloprid urea View View View Breakdown product No Not Listed
 
Working with the Information on this Page

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

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* 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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