Monosodium methanearsonate
- 2163-80-6
- Sodium methylarsonate
- Monosodium methanearsonate
- Daconate
- MSMA
- Create:2008-02-05
- Modify:2025-01-11
- disodium methanearsonate
- methanearsonic acid
- methylarsonate
- methylarsonic acid
- methylarsonous acid
- monomethylarsonic acid
- monomethylarsonic acid, ammonium, iron (3+) salt
- monomethylarsonic acid, calcium salt (2:1)
- monomethylarsonic acid, dimercury (1+) salt
- monomethylarsonic acid, dipotassium salt
- monomethylarsonic acid, disodium salt
- monomethylarsonic acid, iron (2+) salt (3:2)
- monomethylarsonic acid, iron salt
- monomethylarsonic acid, monoammonium salt
- monomethylarsonic acid, monocalcium salt
- monomethylarsonic acid, monosodium salt
- monomethylarsonic acid, zinc salt
- monosodium methanearsonate
- MSMA
- sodium methanearsonate
- 2163-80-6
- Sodium methylarsonate
- Monosodium methanearsonate
- Daconate
- MSMA
- SODIUM METHANEARSONATE
- Monosodium methylarsonate
- Monate
- Monosodium methanearsenate
- Dal-E-Rad
- Caswell No. 582
- Ansar 6.6
- Monosodium methane arsenate
- Methanearsonic acid, monosodium salt
- Sodium hydrogen methylarsonate
- Arsonic acid, methyl-, monosodium salt
- CCRIS 4676
- HSDB 754
- Methanearsonic acid monosodium salt
- EINECS 218-495-9
- EPA Pesticide Chemical Code 013803
- UNII-600QCW45IV
- 600QCW45IV
- DTXSID2025686
- Weed-Hoe
- METHANEARSONIC ACID MONOSODIUM SALT [MI]
- Monosodium acid methane arsonate sesquihydrate
- Gepiron
- Mesamate
- Monoban
- Bueno
- Drexar
- Merge
- Phyban
- Super Arsonate
- Trans-vert
- Herb-All
- Herban M
- Daconate 6
- Mesamate H.C
- Target MSMA
- Methanearsonic acid, sodium salt
- Bueno 6
- METHANEARSONIC ACID, (SODIUM SALT)
- METHANEARSONIC ACID, [SODIUM SALT]
- Mesamate-400
- Mesamate-600
- Silvisar 550
- Weed-hoe-108
- Ansar 170L
- Ansar 170
- Ansar 529
- Merge 823
- Ansar 529 HC
- Methylarsonic acid sodium
- Weed 108
- Dal-E-Rad 120
- Sodium acid methanearsonate
- Monosodium acid metharsonate
- Monosodium methanearsonic acid
- TransVert
- HerbAll
- Monosodium acid methanearsonate
- DalERad
- Methylarsenic acid, sodium salt
- Methylarsonat monosodny [Czech]
- Methylarsonic acid, sodium salt
- Herban N
- Monomethylarsonic acid sodium salt
- NCI-C60071
- Mesamate400
- Mesamate600
- Mesamate H.C.
- Phyban H.C.
- ARSONATE LIQUID
- Methylarsonat monosodny
- WeedHOE108
- DalERad 120
- Monosodium methyl arsenate
- MSMA [HSDB]
- monosodium methane arsonate
- Pesticide Code 013803
- sodium hydrogenmethylarsonate
- SCHEMBL23266
- sodium;hydroxy(methyl)arsinate
- Methylarsonate, monosodium salt
- DTXCID505686
- DISODIUM METHANE ARSONATE
- Arsonic acid, methyl, monosodium salt
- monomethylarsonic acid, monosodium salt
- METHYLARSONIC ACID, MONOSODIUM SALT
- NS00122534
- Q3066718
Information on 5 consumer products that contain Monosodium acid methanearsonate in the following categories is provided:
• Pesticides
H301 (90.5%): Toxic if swallowed [Danger Acute toxicity, oral]
H331 (90.5%): Toxic if inhaled [Danger Acute toxicity, inhalation]
H400 (90.5%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
H410 (90.5%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P321, P330, P391, P403+P233, P405, and P501
(The corresponding statement to each P-code can be found at the GHS Classification page.)
Aggregated GHS information provided per 42 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown.
Acute Tox. 3 (90.5%)
Acute Tox. 3 (90.5%)
Aquatic Acute 1 (90.5%)
Aquatic Chronic 1 (90.5%)
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: Some heavy metals are VERY TOXIC POISONS, especially if their salts are very soluble in water (e.g., lead, chromium, mercury, bismuth, osmium, and arsenic). IMMEDIATELY call a hospital or poison control center and locate activated charcoal, egg whites, or milk in case the medical advisor recommends administering one of them. Also locate Ipecac syrup or a glass of salt water in case the medical advisor recommends inducing vomiting. Usually, this is NOT RECOMMENDED outside of a physician's care. If advice from a physician is not readily available and the victim is conscious and not convulsing, give the victim a glass of activated charcoal slurry in water or, if this is not available, a glass of milk, or beaten egg whites and IMMEDIATELY transport victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, assure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
OTHER: Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the physician will depend upon the specific compound, its chemical, physical and toxicity properties, the exposure level, length of exposure, and the route of exposure. (NTP, 1992)
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
SMALL SPILLS AND LEAKAGE: If you spill this chemical, you should dampen the solid spill material with water, then transfer the dampened material to a suitable container. Use absorbent paper dampened with water to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Wash all contaminated surfaces with a strong soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
STORAGE PRECAUTIONS: You should store this material in a refrigerator away from oxidizing and reducing agents. (NTP, 1992)
IMAP assessments - Arsonic acid, methyl-, monosodium salt: Environment tier I assessment
IMAP assessments - Arsonic acid, methyl-, monosodium salt: Human health tier I assessment
Patents are available for this chemical structure:
https://patentscope.wipo.int/search/en/result.jsf?inchikey=JITOKQVGRJSHHA-UHFFFAOYSA-M
- Australian Industrial Chemicals Introduction Scheme (AICIS)Arsonic acid, methyl-, monosodium salthttps://services.industrialchemicals.gov.au/search-assessments/
- CAMEO ChemicalsLICENSECAMEO Chemicals and all other CAMEO products are available at no charge to those organizations and individuals (recipients) responsible for the safe handling of chemicals. However, some of the chemical data itself is subject to the copyright restrictions of the companies or organizations that provided the data.https://cameochemicals.noaa.gov/help/reference/terms_and_conditions.htm?d_f=falseMETHANEARSONIC ACID, [SODIUM SALT]https://cameochemicals.noaa.gov/chemical/8824CAMEO Chemical Reactivity Classificationhttps://cameochemicals.noaa.gov/browse/react
- ChemIDplusSodium methanearsonatehttps://pubchem.ncbi.nlm.nih.gov/substance/?source=chemidplus&sourceid=0002163806ChemIDplus Chemical Information Classificationhttps://pubchem.ncbi.nlm.nih.gov/source/ChemIDplus
- EPA DSSToxMonosodium methanearsonatehttps://comptox.epa.gov/dashboard/DTXSID2025686CompTox Chemicals Dashboard Chemical Listshttps://comptox.epa.gov/dashboard/chemical-lists/
- EPA Safe Drinking Water Act (SDWA)Monosodium acid methanearsonate (MMA)https://www.epa.gov/sdwa/2021-human-health-benchmarks-pesticides
- European Chemicals Agency (ECHA)LICENSEUse of the information, documents and data from the ECHA website is subject to the terms and conditions of this Legal Notice, and subject to other binding limitations provided for under applicable law, the information, documents and data made available on the ECHA website may be reproduced, distributed and/or used, totally or in part, for non-commercial purposes provided that ECHA is acknowledged as the source: "Source: European Chemicals Agency, http://echa.europa.eu/". Such acknowledgement must be included in each copy of the material. ECHA permits and encourages organisations and individuals to create links to the ECHA website under the following cumulative conditions: Links can only be made to webpages that provide a link to the Legal Notice page.https://echa.europa.eu/web/guest/legal-noticeSodium methylarsonatehttps://echa.europa.eu/substance-information/-/substanceinfo/100.016.815Sodium methylarsonate (EC: 218-495-9)https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/32599
- FDA Global Substance Registration System (GSRS)LICENSEUnless otherwise noted, the contents of the FDA website (www.fda.gov), both text and graphics, are not copyrighted. They are in the public domain and may be republished, reprinted and otherwise used freely by anyone without the need to obtain permission from FDA. Credit to the U.S. Food and Drug Administration as the source is appreciated but not required.https://www.fda.gov/about-fda/about-website/website-policies#linkingMONOSODIUM METHYLARSONATEhttps://gsrs.ncats.nih.gov/ginas/app/beta/substances/600QCW45IV
- Hazardous Substances Data Bank (HSDB)SODIUM METHANEARSONATEhttps://pubchem.ncbi.nlm.nih.gov/source/hsdb/754
- NJDOH RTK Hazardous Substance Listmethanearsonic acid, monosodium salthttp://nj.gov/health/eoh/rtkweb/documents/fs/4105.pdf
- Risk Assessment Information System (RAIS)LICENSEThis work has been sponsored by the U.S. Department of Energy (DOE), Office of Environmental Management, Oak Ridge Operations (ORO) Office through a joint collaboration between United Cleanup Oak Ridge LLC (UCOR), Oak Ridge National Laboratory (ORNL), and The University of Tennessee, Ecology and Evolutionary Biology, The Institute for Environmental Modeling (TIEM). All rights reserved.https://rais.ornl.gov/
- Haz-Map, Information on Hazardous Chemicals and Occupational DiseasesLICENSECopyright (c) 2022 Haz-Map(R). All rights reserved. Unless otherwise indicated, all materials from Haz-Map are copyrighted by Haz-Map(R). No part of these materials, either text or image may be used for any purpose other than for personal use. Therefore, reproduction, modification, storage in a retrieval system or retransmission, in any form or by any means, electronic, mechanical or otherwise, for reasons other than personal use, is strictly prohibited without prior written permission.https://haz-map.com/AboutMonosodium methanearsonatehttps://haz-map.com/Agents/7136
- Toxin and Toxin Target Database (T3DB)LICENSET3DB is offered to the public as a freely available resource. Use and re-distribution of the data, in whole or in part, for commercial purposes requires explicit permission of the authors and explicit acknowledgment of the source material (T3DB) and the original publication.http://www.t3db.ca/downloadsMethylarsonic acid, monosodium salthttp://www.t3db.ca/toxins/T3D0309
- Consumer Product Information Database (CPID)LICENSECopyright (c) 2024 DeLima Associates. All rights reserved. Unless otherwise indicated, all materials from CPID are copyrighted by DeLima Associates. No part of these materials, either text or image may be used for any purpose other than for personal use. Therefore, reproduction, modification, storage in a retrieval system or retransmission, in any form or by any means, electronic, mechanical or otherwise, for reasons other than personal use, is strictly prohibited without prior written permission.https://www.whatsinproducts.com/contents/view/1/6Monosodium acid methanearsonatehttps://www.whatsinproducts.com/chemicals/view/1/1501/002163-80-6Consumer Products Category Classificationhttps://www.whatsinproducts.com/
- EPA Chemical and Products Database (CPDat)Monosodium methanearsonatehttps://comptox.epa.gov/dashboard/DTXSID2025686#exposureEPA CPDat Classificationhttps://www.epa.gov/chemical-research/chemical-and-products-database-cpdat
- EPA Pesticide Ecotoxicity Database
- EU Pesticides Database
- Japan Chemical Substance Dictionary (Nikkaji)
- USGS Columbia Environmental Research CenterLICENSEhttps://www.usgs.gov/foia
- SpectraBase
- Springer Nature
- Wikidata
- PubChem
- Medical Subject Headings (MeSH)LICENSEWorks produced by the U.S. government are not subject to copyright protection in the United States. Any such works found on National Library of Medicine (NLM) Web sites may be freely used or reproduced without permission in the U.S.https://www.nlm.nih.gov/copyright.htmlmonomethylarsonic acidhttps://www.ncbi.nlm.nih.gov/mesh/67020300
- GHS Classification (UNECE)GHS Classification Treehttp://www.unece.org/trans/danger/publi/ghs/ghs_welcome_e.html
- NORMAN Suspect List ExchangeLICENSEData: CC-BY 4.0; Code (hosted by ECI, LCSB): Artistic-2.0https://creativecommons.org/licenses/by/4.0/NORMAN Suspect List Exchange Classificationhttps://www.norman-network.com/nds/SLE/
- EPA Substance Registry ServicesEPA SRS List Classificationhttps://sor.epa.gov/sor_internet/registry/substreg/LandingPage.do
- MolGenieMolGenie Organic Chemistry Ontologyhttps://github.com/MolGenie/ontology/
- PATENTSCOPE (WIPO)SID 403447383https://pubchem.ncbi.nlm.nih.gov/substance/403447383