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Arsenic trioxide - 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 Arsenic trioxide |
Basic Identification Information About This Chemical |
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Chemical Name: | Arsenic trioxide |
CAS Number: | 1327-53-3 |
U.S. EPA PC Code: |
007001
007001 |
CA DPR Chem Code: | 42 |
Molecular Weight: | 197.84 |
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 | |
00042 (CA DPR Chem Code Text ) , 007001 [US EPA PC Code, Text ] , 1327-53-3 (CAS number) , 1327533 , 1327533 (CAS number without hyphens) , 42 (CA DPR Chem Code) ) , 7001 [US EPA PC Code, Numeric ] , Arsenic (III) oxide , Arsenic From Arsenic Trioxide , Arsenic oxide (As2O3) , Arsenic oxide (As2O3) , Arsenic sesquioxide (As2O3) , Arsenic trioxide , Arsenic trioxide, solid , Arsenictrioxide , Arsenicum Album , Arsenous acid anhydride , Arsenous anhydride , Arsenous oxide , Diarsonic trioxide , White arsenic | |
Products Containing This ChemicalCurrent and historic U.S. registered products | |
Signs and Symptoms of Arsenic trioxide 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. |
Arsenic trioxide is a Arsenical compound. |
Symptoms of Poisoning with Arsenical Compounds |
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- Garlic odor of breath and feces, metallic taste in mouth. |
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Source for Group Symptoms: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 14. |
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Treatment for Arsenical Poisoning | ||||
See: Recognition and Management of Pesticide Poisoning, 5th edition, U.S. EPA, Chapter 14, page 129. | ||||
Symptoms of Arsenic trioxide 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 DISPERSION OF DUST! AVOID ALL CONTACT! AVOID EXPOSURE OF (PREGNANT) WOMEN! |
General First Aid: IN ALL CASES CONSULT A DOCTOR! | ||
Route of Exposure |
Symptoms |
First Aid |
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Inhalation | Burning sensation. Cough. Dizziness. Headache. Shortness of breath. Sore throat. Weakness. Chest pain. Symptoms may be delayed (see Notes). (See Ingestion). | Fresh air rest. Refer for medical attention. | |
Skin | Dry skin. Redness. Skin burns. Pain. Blisters. | Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention. | |
Eyes | Redness. Pain. Severe deep burns. Conjunctivitis. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible) then take to a doctor. | |
Ingestion | Abdominal cramps. Abdominal pain. Burning sensation. Diarrhoea. Nausea. Vomiting. Muscular cramps. Shock. Death. | Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Rest. Refer for medical attention. | |
Notes for ICSC Information | |||
Physical properties depend on crystalline form of the substance. 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. The symptoms of acute poisoning appear ½ to 1 hour after the exposure but may be delayed many hours. No odour warning if toxic concentrations are present. Do NOT take working clothes home. The recommendations on this Card also apply to inorganic trivalent arsenic compounds (arsenites). |
Toxicity Information for Arsenic trioxide |
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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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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 |
Arsenic trioxide |
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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 |
Not Listed 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 |
Arsenic trioxide |
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IARC Carcinogens U.S. NTP Carcinogens California Prop 65 Known Carcinogens U.S. EPA Carcinogens TRI Carcinogen |
1, Known Known Yes Not Listed Not Listed |
Not Listed Known Yes Not Listed Not Listed |
Endocrine Disruption |
Arsenic trioxide |
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Illinois EPA list Keith list Colborn list Benbrook list Danish Inert list EU list |
Not Listed Yes Yes Not Listed Not listed Not listed |
Not Listed Yes Yes Not Listed Not listed Not listed |
Reproductive and Developmental Toxicity |
Arsenic trioxide |
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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 |
Yes Not Listed Not Listed Not Listed Not Listed |
Yes Not Listed Not Listed Not Listed Not Listed |
Chemicals of Special Concern |
Arsenic trioxide |
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PAN
Bad Actors PAN Dirty Dozen list |
Yes Not Listed |
Yes Not Listed |
Water Pollution Potential and Criteria for Arsenic trioxide |
Water Pollution Potential |
This Chemical |
Parent Chemical |
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Arsenic trioxide | ![]() |
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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) |
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- - - - |
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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. |
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Regulatory Information for Arsenic trioxide |
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 |
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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 Yes No No Not Listed HAPTAC, Pesticide |
No Yes No No Not Listed HAPTAC, Industrial chemical |
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 |
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to web site Go to web site Go to web site |
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Ecotoxicity for Arsenic trioxide |
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Aquatic Ecotoxicity |
All Toxic Effects for Organism Group |
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Organism Group | Effects Noted |
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Mortality |
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Accumulation, Mortality |
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Mortality, Population |
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Mortality |
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Accumulation, Behavior, Biochemistry, Enzyme(s), Feeding Behavior, Growth, Histology, Morphology, Mortality, No Effect Coded, Physiology, Population |
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Physiology |
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Accumulation, Mortality |
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Accumulation, Avoidance, Biochemistry, Growth, Intoxication, Mortality |
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Mortality |
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Physiology |
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Accumulation, Growth, Intoxication, Mortality, No Effect Coded, Physiology, Population, Reproduction |
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Accumulation, Mortality | ![]() |
Summary of Acute Toxicity for Organism Group |
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Organism Group | Average Acute Toxicity | Acute Toxicity Range |
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Highly Toxic | Highly Toxic |
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Moderately Toxic | Moderate Toxicity |
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Moderately Toxic | Slight to Very High Toxicity |
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Slightly Toxic | Slight to Moderate Toxicity |
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Slightly Toxic | Slight Toxicity |
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Moderately Toxic | Moderate Toxicity |
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Moderately Toxic | Slight to 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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Organism Group | Chronic Toxicity | |
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Honeybees |
Related Chemicals for Arsenic trioxide |
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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7440-38-2 | Parent | P | Arsenic | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
7784-44-3, 13462-93-6 | Related | 3 | Ammonium arsenate | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
Related | 1 | Ammonium iron methyl arsonate | ![]() |
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No | Not Listed | ||
Related | Arsenic (inorganic oxides) | ![]() |
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Industrial chemical | No | Yes | ||
7631-89-2 | Related | P | Arsenic acid (H3AsO4) sodium salt (1:?) | ![]() |
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No | Not Listed | |
60112-04-1 | Related | P | Arsenic acid (H3AsO4), Aluminum salt (3:1) | ![]() |
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No | Not Listed | |
53400-38-7 | Related | 1 | Arsenic acid (H6As4O12), Iron (3+) salt(1:2) | ![]() |
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No | Not Listed | |
7778-43-0 | Related | P | Arsenic acid, Disodium salt | ![]() |
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No | Not Listed | |
10048-95-0 | Related | P | Arsenic acid, Disodium salt, Heptahydrate (Na2AsH3O4.7H2O) | ![]() |
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No | Not Listed | |
7784-41-0 | Related | P | Arsenic acid, Monopotassium salt | ![]() |
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No | Not Listed | |
10103-60-3 | Related | P | Arsenic acid, Monosodium salt | ![]() |
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No | Not Listed | |
xx7440-38-2 | Related | 3 | Arsenic and arsenic compounds | ![]() |
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Herbicide, Rodenticide | No | Yes |
x7440-38-2 | Related | 3 | Arsenic compounds, inorganic | ![]() |
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Herbicide, Rodenticide, Electronics production, Battery component, Building materials | No | Yes |
56320-22-0 | Related | 3 | Arsenic disulfide | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
Related | P | Arsenic in drinking-water | ![]() |
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No | Yes | ||
12777-38-7 | Related | P | Arsenic oxide | ![]() |
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No | Not Listed | |
1303-28-2 | Related | 3 | Arsenic pentoxide | ![]() |
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Fungicide, Insecticide, Rodenticide, Herbicide | Yes | Yes |
12612-21-4, 12344-68-2 | Related | 3 | Arsenic sulfide | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
1327-53-3 | Related | 3 | Arsenic trioxide | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
1303-33-9, 1303-34-0, 12044-79-0 | Related | 3 | Arsenic trisulfide | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
7778-39-4 | Related | 3 | Arsenic, inorganic | ![]() |
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Herbicide, Insecticide, Rodenticide | Yes | Yes |
98-50-0 | Related | 3 | Arsonic acid, (4-aminophenyl)- | ![]() |
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No | Yes | |
58829-95-1, 13462-94-7, 53404-17-4 | Related | 3 | Arsonic acid, ammonium salt | ![]() |
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Herbicide, Insecticide, Wood Preservative | No | Yes |
16102-92-4 | Related | 3 | Basic copper arsenate | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
7778-44-1 | Related | 3 | Calcium arsenate | ![]() |
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Herbicide, Insecticide, Rodenticide, Molluscicide | No | Yes |
53404-59-4 | Related | 3 | Calcium arsenite | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
10290-12-7 | Related | 3 | Copper arsenite | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
12002-03-8 | Related | 3 | Cupric acetoarsenite | ![]() |
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Wood Preservative | No | Yes |
33972-75-7 | Related | 1 | Iron methanoarsenate | ![]() |
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No | Not Listed | |
10103-50-1 | Related | 3 | Magnesium arsenate | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
7784-38-5 | Related | 3 | Manganese arsenate | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
35745-11-0 | Related | 1,2 | Methylarsonic acid, Ammonium iron (3+) salt | ![]() |
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No | Not Listed | |
10124-50-2, 13464-35-2 | Related | 3 | Potassium arsenite | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
17029-22-0 | Related | 3 | Potassium hexafluoroarsenate | ![]() |
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No | Yes | |
13464-38-5 | Related | 3 | Sodium arsenate | ![]() |
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Herbicide, Insecticide, Rodenticide | No | Yes |
7784-46-5 | Related | 3 | Sodium arsenite | ![]() |
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Herbicide, Insecticide, Rodenticide, Fungicide | No | Yes |
13464-42-1 | Related | 3 | Sodium pyroarsenate | ![]() |
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Wood Preservative, Fungicide | No | Yes |
17367-56-5, 16486-45-6, 26273-99-4 | Related | 3 | Sodium thioarsenate | ![]() |
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No | Yes | |
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. |