≥80% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Methylarsonic acid sodium is an organoarsenic compound with environmental toxicity that can be used as a herbicide to control weeds. Sodium methylarsonate interferes with plant metabolic processes, particularly by hindering photosynthesis and protein synthesis, ultimately leading to plant death. Additionally, sodium methylarsonate can induce the production of metallothioneins (MTs) in fish.
| Canonical Smiles | C[As](=O)(O)[O-].[Na+] |
|---|---|
| IUPAC Name | sodium;hydroxy(methyl)arsinate |
| InChIKey | JITOKQVGRJSHHA-UHFFFAOYSA-M |
| INCHI | 1S/CH5AsO3.Na/c1-2(3,4)5;/h1H3,(H2,3,4,5);/q;+1/p-1 |
| Isomeric SMILES | C[As](=O)(O)[O-].[Na+] |
| WGK Germany | 3 |
| RTECS | PA2625000 |
| UN Number | 2994 |
| Packing Group | I |
| Molecular Weight | 161.95 |
| Reaxy-Rn | 8348322 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=8348322&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organometallic compounds |
| Class | Organometalloid compounds |
| Subclass | Organoarsenic compounds |
| Intermediate Tree Nodes | Pentavalent organic arsenic compounds |
| Direct Parent | Pentaorganoarsanes |
| Alternative Parents | Organic metalloid salts Alkylarsine oxides Organopnictogen compounds Organic sodium salts Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aliphatic acyclic compounds |
| Substituents | Pentaorganoarsane - Alkylarsine oxide - Oxygen-containing organoarsenic compound - Organic alkali metal salt - Organic metalloid salt - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organic sodium salt - Organic salt - Aliphatic acyclic compound |
| Description | This compound belongs to the class of organic compounds known as pentaorganoarsanes. These are organoarsenic compounds containing an arsenic compound that is pentasubstituted by only organic groups. |
| External Descriptors | Not available |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
 E2628606 | Certificate of Analysis | Apr 28, 2026 | M356966 |
| I2503759 | Certificate of Analysis | Aug 30, 2025 | M356966 |
| C2521579 | Certificate of Analysis | Oct 28, 2024 | M356966 |
| C2521582 | Certificate of Analysis | Oct 28, 2024 | M356966 |
| Sensitivity | Moisture sensitive. |
|---|---|
| Molecular Weight | 161.952 g/mol |
| XLogP3 | |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 0 |
| Exact Mass | 161.927 Da |
| Monoisotopic Mass | 161.927 Da |
| Topological Polar Surface Area | 60.400 Ų |
| Heavy Atom Count | 6 |
| Formal Charge | 0 |
| Complexity | 71.200 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 2 |
| 1. Yanyan Lin, Ningbo Cheng, Na Meng, Chao Wang, Xianfeng Wang, Jianyong Yu, Bin Ding. (2023) A Patterned Knitted Fabric with Reversible Gating Stability for Dynamic Moisture Management of Human Body. ADVANCED FUNCTIONAL MATERIALS, 33 (44): (2304109). [PMID:] [10.1002/adfm.202304109] |
