PAN Pesticides Database - Chemicals

Naphthalene - 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 Naphthalene

Basic Identification Information About This Chemical
Chemical Name: Naphthalene
CAS Number: 91-20-3
U.S. EPA PC Code: 055801
CA DPR Chem Code: 421
Molecular Weight: 128.17
Use Type: Insect Repellent , Insecticide
Chem Class:
View Related Chemicals
 
Additional Resources About This Chemical Class and Use Type

See the Global Pesticide Resources page for many additional links.

 
Other Names for this Chemical
About Chemical Synonyms
00421 (CA DPR Chem Code Text) , 00421 (CA DPR Chem Code) , 055801 (US EPA PC Code Text) , 421 (CA DPR Chem Code) , 421 (CA DPR Chem Code) , 55801 (US EPA PC Code) , 91-20-3 (CAS number) , 91203 , 91203 (CAS number without hyphens) , Naftaleno , Naphthalene , Naphthalene , Naphthalene Toxicological Review , Naphthalene/1-methylnaphthalene/2-methylnaphthalene , Naphthalin , Napthalene , Tar camphor
 
Products Containing This Chemical
Current and historic U.S. registered products
View U.S. Products All Products Currently Registered Products
 

Signs and Symptoms of Naphthalene 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 Naphthalene 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 DISPERSION OF DUST!

Route of Exposure

Symptoms

First Aid

Inhalation Confusion. Headache. Sweating. Nausea. Vomiting. Jaundice. Dark urine. Fresh air rest. Refer for medical attention.
Skin Rinse skin with plenty of water or shower.
Eyes First rinse with plenty of water for several minutes (remove contact lenses if easily possible) then take to a doctor.
Ingestion Abdominal pain. Convulsions. Diarrhoea. Dizziness. Unconsciousness. (Further see Inhalation). Rest. Refer for medical attention.
Notes for ICSC Information
Some individuals may be more sensitive to the effect of naphthalene on blood cells.
 

Toxicity Information for Naphthalene

  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
Moderate
No
 
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.

Additional Resources about the Toxicity of this Chemical

See the Global Pesticide Resources page for many additional links.

Detailed Toxicity Information

Acute Toxicity 2
Naphthalene
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

Slightly to Moderately Toxic

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
Naphthalene
IARC Carcinogens
U.S. NTP Carcinogens
California Prop 65 Known Carcinogens
U.S. EPA Carcinogens
TRI Carcinogen
2B, Possible
Reasonably Anticipated
Yes
Not Listed
Not Listed
 
Endocrine Disruption
Naphthalene
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
Naphthalene
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
Naphthalene
PAN Bad Actors
PAN Dirty Dozen list
Yes
Not Listed
 

Water Pollution Potential and Criteria for Naphthalene

Water Pollution Potential

PAN Ground Water Contaminant Rating Insufficient Data
 

Water Standards and Criteria

U.S. National Drinking Water Standards and Health Criteria
g/L unless noted  
Maximum Contaminant Level (MCL) 0  
Maximum Contaminant Level Goal (MCLG)  
One Day Exposure Health Advisory Level 500.0  
Ten Day Exposure Health Advisory Level 500.0  
Lifetime Exposure Health Advisory Level 100.0  
Reference Dose 20.0 (g/kg/day)  
U.S. Drinking Water Equivalent Level 700.0  
Concentration with Lifetime Cancer Risk of 1 in 10,000  
Canadian Water Quality Guidelines for the Protection of Aquatic Life
g/L unless noted  
Fresh Water Guidelines 1.1 Notes: c
Salt Water Guidelines 1.4 Notes: c
 

Regulatory Information for Naphthalene

International Regulatory Status

Registration in Selected Countries Registration in Selected Countries:
Naphthalene

 
UNEP Persistent Organic Pollutant (POP)
UNEP Prior Informed Consent Chemical (PIC)
WHO Obsolete Pesticide
Not Listed
Not Listed
Yes
 

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
Yes
No

No
Not Listed
HAPTAC, Pesti
 

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 Naphthalene

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 Behavior, Cell(s), Mortality, Physiology
Annelida Mortality
AquaticPlants Biochemistry, Enzyme(s), Population
Cnidaria Accumulation
Crustaceans Accumulation, Behavior, Biochemistry, Cell(s), Development, Enzyme(s), Feeding Behavior, Genetics, Growth, Histology, Hormone(s), Intoxication, Morphology, Mortality, Physiology
Echinoderms Mortality
Fish Accumulation, Behavior, Biochemistry, Cell(s), Development, Enzyme(s), Genetics, Growth, Histology, Hormone(s), Morphology, Mortality, Physiology, Reproduction
Insects Accumulation, Biochemistry, Development, Enzyme(s), Mortality, Physiology, Reproduction
Molluscs Accumulation, Behavior, Biochemistry, Development, Enzyme(s), Feeding Behavior, Histology, Mortality, Physiology
Phytoplankton Accumulation, Behavior, Biochemistry, Cell(s), Growth, Histology, Mortality, Physiology, Population, Reproduction
Zooplankton Accumulation, Behavior, Biochemistry, Development, Feeding Behavior, Growth, Intoxication, Mortality, No Effect Coded, Physiology, Population, Reproduction
~ Un-Assigned Accumulation, Biochemistry, Growth
View All Aquatic Ecotoxicity Studies and References
 
Summary of Acute Toxicity for Organism Group
Organism Group Average Acute Toxicity Acute Toxicity Range
Amphibians Moderately Toxic Moderate Toxicity
Annelida Moderately Toxic Moderate Toxicity
Crustaceans Moderately Toxic Moderate Toxicity
Fish Moderately Toxic Slight to High Toxicity
Insects Slightly Toxic Slight to Moderate Toxicity
Molluscs Slightly Toxic Not Acutely Toxic to Moderate Toxicity
Zooplankton Moderately Toxic Slight to Moderate 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 Naphthalene

CAS Number Relation Reason Chemical Name Chem Detail Registration Symptoms California Use Chem Use Type U.S. EPA Reg PAN Bad Actor
91-20-3 Parent P Naphthalene View View View View Insecticide, Insect Repellent Yes Yes
1321-94-4 Related 2 Methylated naphthalene View View View View No Not Listed
Related 8 Naphthalene, other related View View View View Insecticide No Not Listed
24157-81-1 Related 2 Naphthalene,2,6-bis(1-methylethyl)- View View View View Yes 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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