Dimethylarsinic acid

Dimethylarsinic acid is an organoarsenic compound with the molecular formula C2H7AsO2 and CAS number 75-60-5. This chemical substance has a molecular weight of 138 g/mol and belongs to the family of arsenic-containing organic compounds. It is characterized by two methyl groups attached to an arsenic atom, along with a carboxylic acid functional group, making it a methylated derivative of arsenic acid with distinct chemical properties.

Dimethylarsinic acid appears as a white crystalline solid at room temperature with good water solubility due to its polar carboxylic acid group. The compound is hygroscopic, meaning it readily absorbs moisture from the atmosphere. It exhibits typical properties of organoarsenic compounds, including stability under normal conditions while maintaining the characteristic chemical behavior of both organic acids and arsenic derivatives in aqueous solutions.

Dimethylarsinic acid is primarily used in analytical chemistry as a reference standard and in research applications for studying arsenic metabolism and environmental contamination. It serves as an important intermediate in pharmaceutical research and is utilized in specialized chemical synthesis processes. The compound is also employed in toxicological studies and environmental monitoring programs to understand arsenic speciation and bioaccumulation patterns in various ecosystems.

Dimethylarsinic acid requires careful handling with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and lab coats. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid skin and eye contact, and ensure proper hygiene practices including thorough handwashing after handling. Always follow established laboratory safety protocols and maintain clean work surfaces to prevent cross-contamination.

Dimethylarsinic acid should be stored in tightly sealed containers in a cool, dry place away from direct sunlight and heat sources. Keep the substance in its original packaging with proper labeling and store it separately from incompatible materials such as strong oxidizers and reducing agents. Maintain storage temperatures below 25°C and ensure adequate ventilation in storage areas. Regular inspection of container integrity is recommended to prevent moisture absorption.

Dimethylarsinic acid exposure requires immediate action: for skin contact, rinse thoroughly with plenty of water for at least 15 minutes and remove contaminated clothing. In case of eye contact, flush immediately with clean water for 15-20 minutes while keeping eyelids open. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and rinse mouth with water. Seek medical attention promptly for any significant exposure and provide safety data sheet information to medical personnel.

Dimethylarsinic acid disposal must comply with local and national hazardous waste regulations due to its arsenic content. The substance should be collected and disposed of through licensed hazardous waste disposal companies specialized in handling arsenic-containing compounds. Never dispose of this chemical down drains or in regular waste streams. Contact local environmental authorities for specific disposal requirements and ensure proper documentation of waste disposal activities according to regulatory standards.

Dimethylarsinic acid is classified under ADR as Class 6.1 (toxic substances), Packing Group II, requiring specific transport regulations for dangerous goods. Packages must be properly labeled with appropriate hazard markings and documentation. Transportation should be conducted by certified carriers experienced in handling toxic materials, using approved packaging that meets UN specifications. Ensure compliance with international transport regulations and provide proper shipping papers including safety data sheets.

Dimethylarsinic acid is subject to various chemical regulations including REACH registration requirements for manufacture and import in the European Union. While not currently listed as a SVHC (Substance of Very High Concern), it falls under general chemical safety legislation due to its arsenic content. Users must comply with occupational exposure limits, environmental discharge restrictions, and reporting requirements. Regular monitoring and risk assessment may be required depending on usage quantities and applications.

Dimethylarsinic acid is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers across the continent. OYSI provides reliable supply chains for laboratory and industrial applications, ensuring compliance with European chemical regulations. As a professional chemical distributor, OYSI offers technical support and documentation required for safe handling and regulatory compliance. Contact OYSI directly for availability, specifications, and delivery options in your region.