PAN Pesticides Database - Chemicals

Demeton-S - 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 Demeton-S

Basic Identification Information About This Chemical
Chemical Name: Demeton-S
CAS Number: 126-75-0
U.S. EPA PC Code: 057603
CA DPR Chem Code:
Molecular Weight: 258.3
Use Type: Insecticide
Chem Class: Organophosphorus
View Related Chemicals
 
Additional Resources About This Chemical Class and Use Type
 
Other Names for this Chemical
About Chemical Synonyms
(US EPA PC Code ) , 057603 (US EPA PC Code Text ) , 126-75-0 (CAS number) , 126750 , 126750 (CAS number without hyphens) , 558 (PDP Code) , Demeton-S , DemetonS , Diethyl-S-(2-(ethylthio)ethyl)phosphorothiolate , disulfoton oxygen analog , Ethanethiol, 2-(ethylthio)-, S-ester with O,O-diethylphosphorothioate , Isodemeton , Isosystox , Mercaptofos teolery , O,O-Diaethyl-S(2-aethyltio-aethyl)monothiophosphat (USSR) , O,O-Diethyl S-(2-(ethylthio)ethyl) phosphorothioate , O,O-Diethyl S-(2-ethioethyl)phosphorothioate , O,O-diethyl S-2-(ethylthio)-ethyl , O,O-diethyl S-[2-(ethylthio)-ethyl]phosphorothioate , O,O-Diethyl S-[2-(ethylthio)ethyl] ester, Phosphorothioic acid , O,O-Diethyl-S-(2-ethylthio-ethyl)-monothiofosfaat , O,O-Diethyl-S-ethyl-2-ethylmercaptophosphorothiolate , O,O-Dietil-S-(2-etiltio-etil) monotiofosfato , Phosphorothioic acid, O,O-diethyl S-(2-ethylthio)ethyl ester , PO-systox , S-(2-(Ethylthio)ethyl O,O-diethyl thiophosphate , S-(2-(Ethylthio)ethyl phosphoric acid, O,O-diethyl ester , Systox thiol , Thiol Systox , Thiolodemeton , Thiophosphate de O,O-diethyle et de S-(2-ethylthioethyle)
 
Products Containing This Chemical
Current and historic U.S. registered products
View U.S. Products All Products Currently Registered Products
 

Signs and Symptoms of Demeton-S 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.

Demeton-S is a Organophosphorus compound.

Report a Poisoning

Symptoms of Poisoning with Organophosphorus Compounds
Find Products Containing this Chemical

- Excessive salivation, sweating, rhinorrhea and tearing.
- Muscle twitching, weakness, tremor, incoordination.
- Headache, dizziness, nausea, vomiting, abdominal cramps, diarrhea.
- Respiratory depression, tightness in chest, wheezing, productive cough, fluid in lungs.
- Pin-point pupils, sometimes with blurred or dark vision.
- Severe cases: seizures, incontinence, respiratory depression, loss of consciousness.
- Cholinesterase inhibition.

Source for Group Symptoms: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 4.

Treatment for Organophosphorus Poisoning

See: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 4, page 40.

 
Symptoms of Demeton-S 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! AVOID ALL CONTACT! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!
General First Aid: IN ALL CASES CONSULT A DOCTOR!

Route of Exposure

Symptoms

First Aid

Inhalation Convulsions. Dizziness. Laboured breathing. Nausea. Unconsciousness. Vomiting. Pupillary constriction muscle cramp excessive salivation. Fresh air rest. Artificial respiration if indicated. Refer for medical attention. See Notes.
Skin MAY BE ABSORBED! Muscle twiching at first. (Further see Inhalation). Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Liquid aerosol will be absorbed. Redness. Pain. First rinse with plenty of water for several minutes (remove contact lenses if easily possible) then take to a doctor.
Ingestion Abdominal cramps. Diarrhoea. Laboured breathing. Nausea. Unconsciousness. Vomiting. Pupillary constriction muscle cramps excessive salivation. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Rest. Refer for medical attention. See Notes.
Notes for ICSC Information
Depending on the degree of exposure periodic medical examination is indicated. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Carrier solvents used in commercial formulations may change physical and toxicological properties. Do NOT take working clothes home. Isosystox is a trade name.
 

Toxicity Information for Demeton-S

  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
 
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
Demeton-S Demeton
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

Yes
Not Listed
Not Listed
Not Available
No Consensus Value
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
Demeton-S Demeton
IARC Carcinogens
U.S. NTP Carcinogens
California Prop 65 Known Carcinogens
U.S. EPA Carcinogens
TRI Carcinogen
Not Listed
Not Listed
Not Listed
No data available
Not Listed
Not Listed
Not Listed
Not Listed
No data available
Not Listed
 
Endocrine Disruption
Demeton-S Demeton
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
Not Listed
Not Listed
Not Listed
Not Listed
Not Listed
Not Listed
 
Reproductive and Developmental Toxicity
Demeton-S Demeton
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
Demeton-S Demeton
PAN Bad Actors
PAN Dirty Dozen list
Yes
Not Listed
Yes
Not Listed
 

Water Pollution Potential and Criteria for Demeton-S

Water Pollution Potential

This Chemical
Parent Chemical
  Demeton-S Demeton
PAN Ground Water Contaminant Rating Insufficient Data Insufficient Data
 

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 Demeton-S

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
Yes
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
No
Not Listed
No

No
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 Demeton-S

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
Zooplankton Intoxication
View All Aquatic Ecotoxicity Studies and References
 
Summary of Acute Toxicity for Organism Group

Sorry, no acute aquatic ecotoxicity data available for this chemical. Try related chemicals.

 

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 Demeton-S

CAS Number Relation Reason Chemical Name Chem Detail Symptoms California Use Chem Use Type U.S. EPA Reg PAN Bad Actor
8065-48-3 Parent P Demeton View View View Insecticide, Nematicide No Yes
298-03-3 Related 2 Demeton-O View View View Insecticide No Yes
867-27-6 Related 2 Demeton-O-methyl View View View Insecticide No Yes
25476-48-6 Related 5a Demeton-O-methyl sulfone View View View Breakdown product No Yes
126-75-0 Related 2 Demeton-S View View View Insecticide No Yes
Related 2,5a Demeton-S sulfone View View View Breakdown product No Yes
8022-00-2, 919-86-8 Related 13 Demeton-S-methyl (mixture) View View View Insecticide No Yes
17040-19-6 Related 2,5a Demeton-S-methyl sulfone View View View Breakdown product, Insecticide No Yes
 
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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