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1-Naphthol - 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 1-Naphthol
Basic Identification Information About This Chemical
Chemical Name: 1-Naphthol
CAS Number: 90-15-3
U.S. EPA PC Code: 206500
206500
CA DPR Chem Code:
Molecular Weight: 144.173
Use Type: Breakdown product
Chem Class:
View Related Chemicals
 
Additional Resources About This Chemical Class and Use Type
 
Other Names for this Chemical
About Chemical Synonyms
1-Hydroxynaphthalene , 1-Naphthalenol , 1-Naphthol , 1Naphthol , 206500 [US EPA PC Code, Numeric ] , 206500 [US EPA PC Code, Text ] , 382 (PDP Code) , 90-15-3 (CAS number) , 90153 , 90153 (CAS number without hyphens) , alpha-Hydroxynaphthalene , Basf Ursol ERN , C.I. 76605 , C.I. Oxidation Base 33 , C.I.Oxidation Base 33 , Carbaryl breakdown product , Durafur Developer D , Fouramine ERN , Fourrine 99 , Fourrine ERN , Furro ER , Nako TRB , Naphthalene, 1-hydroxy-
 
Products Containing This Chemical
Current and historic U.S. registered products
View U.S. Products All Products Currently Registered Products
 

Signs and Symptoms of 1-Naphthol 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.

Sorry! No symptoms for this chemical or chemical group are available. See related chemicals for possible additional information.
 
 

Toxicity Information for 1-Naphthol

  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
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
 1-Naphthol Carbaryl
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 		II, Moderately Hazardous
Not Listed
Not Available
Moderately Toxic
No NTP Studies

Yes
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
 1-Naphthol Carbaryl
IARC Carcinogens
U.S. NTP Carcinogens
California Prop 65 Known Carcinogens
U.S. EPA Carcinogens
TRI Carcinogen		 Not Listed
Not Listed
Not Listed
Not Listed
Not Listed		 3, Unclassifiable
Not Listed
Yes
Likely
Not Listed
 
Endocrine Disruption
 1-Naphthol Carbaryl
Illinois EPA list
Keith list
Colborn list
Benbrook list
Danish Inert list
EU list		 Not listed
Not listed
Not listed
Not listed
Not listed
Yes		 Suspected
Yes
Yes
Yes
Not listed
Yes
 
Reproductive and Developmental Toxicity
 1-Naphthol Carbaryl
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 		Yes
Not Listed
Not Listed
Yes
Not Listed
 
Chemicals of Special Concern
 1-Naphthol Carbaryl
PAN Bad Actors
PAN Dirty Dozen list		 Not Listed
Not Listed		 Yes
Not Listed
 

Water Pollution Potential and Criteria for 1-Naphthol

Water Pollution Potential

This Chemical
Parent Chemical
  1-Naphthol Carbaryl
PAN Ground Water Contaminant Rating Insufficient Data 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) 		866.0
245.0
-
-
- 		 
 

Sorry, no water quality standards or criteria have been established for this chemical by the U.S. or Canadian governments; however, there may be criteria established for related chemicals.
 

Regulatory Information for 1-Naphthol

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

No
Not Listed
Not Listed 		Yes
Yes
No

Yes
Potential
HAPTAC, Pesticide
 

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 1-Naphthol

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
Crustaceans Behavior, Mortality
Echinoderms No Effect Coded
Fish Behavior, Development, Growth, Mortality, No Effect Coded, Physiology
Insects Accumulation, Intoxication, Mortality
Molluscs Cell(s), Development, Growth, Histology, Mortality
Phytoplankton Cell(s), Mortality, Physiology, Population
Zooplankton Behavior, Development, Feeding Behavior, Intoxication, Mortality, Reproduction
~ Un-Assigned Mortality
View All Aquatic Ecotoxicity Studies and References
 
Summary of Acute Toxicity for Organism Group
Organism Group Average Acute Toxicity Acute Toxicity Range
Crustaceans Slightly Toxic Slight to Moderate Toxicity
Fish Moderately Toxic Moderate to High Toxicity
Molluscs Slightly Toxic Slight to Moderate Toxicity
Zooplankton Slightly Toxic Slight to 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
Organism Group Chronic Toxicity  
Honeybees  

Related Chemicals for 1-Naphthol
CAS Number Relation Reason Chemical Name Chem Detail Symptoms California Use Chem Use Type U.S. EPA Reg PAN Bad Actor
63-25-2 Parent P Carbaryl View View View Insecticide, Plant Growth Regulator, Nematicide Yes Yes
90-15-3 Related 5a 1-Naphthol 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.

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: Pesticide Action Network, North America, PAN Pesticide Database, (Berkeley, CA, 2019), http:www.pesticideinfo.org. © 2000-2019 Pesticide Action Network, North America. All rights reserved.