Arsenic acid

Arsenic acid is an inorganic compound with the chemical formula AsHO3 and CAS number 10102-53-1. It has a molecular weight of 123.928 g/mol and belongs to the family of arsenic compounds. This chemical substance is primarily used in industrial applications and requires careful handling due to its toxic nature. Arsenic acid plays an important role in various manufacturing processes and chemical synthesis applications.

Arsenic acid is a crystalline solid at room temperature, typically appearing as white or colorless crystals. It is highly soluble in water, forming acidic solutions. The compound is hygroscopic, meaning it readily absorbs moisture from air. It has a molecular weight of 123.928 g/mol and contains pentavalent arsenic. The substance is odorless and exhibits strong acidic properties when dissolved in water.

Arsenic acid is primarily used in industrial applications including wood preservation treatments, metal processing, and as a chemical intermediate in manufacturing processes. It serves as a precursor for producing other arsenic compounds and is utilized in certain specialized chemical syntheses. The compound also finds application in analytical chemistry and research laboratories for specific analytical procedures and chemical reactions.

Arsenic acid requires strict safety measures during handling due to its toxic properties. Personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing must be worn. Work should be conducted in well-ventilated areas or under fume hoods. Avoid inhalation, skin contact, and ingestion. Ensure proper training for personnel handling this substance and maintain emergency procedures readily available.

Arsenic acid should be stored in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and reducing agents. Keep containers tightly closed and protected from moisture due to its hygroscopic nature. Storage areas must be secure and accessible only to trained personnel. Ensure proper labeling and maintain appropriate emergency response equipment nearby.

Immediate action is required in case of contact with arsenic acid. For skin contact, remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. In case of eye contact, flush immediately with water and seek medical attention. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical assistance.

Arsenic acid disposal must comply with local and national hazardous waste regulations due to its toxic nature. The substance cannot be disposed of in regular waste streams and requires specialized hazardous waste treatment facilities. Contact licensed waste disposal companies for proper handling and disposal. Neutralization should only be performed by qualified professionals following appropriate safety protocols and regulatory requirements.

Arsenic acid is classified under ADR Class 6.1 (toxic substances), Packing Group II, indicating its hazardous nature for transport. Proper packaging, labeling, and documentation are required according to dangerous goods regulations. Only authorized carriers with appropriate permits and training should handle transportation. Ensure compliance with international transport regulations and maintain proper emergency response information during transit.

Arsenic acid is subject to various regulatory frameworks including REACH registration requirements in Europe and CLP classification for hazard communication. The substance requires proper safety data sheets and hazard labeling. It is not currently listed as an SVHC (Substance of Very High Concern), but strict handling and reporting requirements apply due to its toxic properties and environmental concerns.

Arsenic acid is available through OYSI, a European distributor of chemical products specializing in industrial chemicals. As a professional chemical supplier, OYSI can provide proper documentation, safety data sheets, and regulatory compliance support for arsenic acid purchases. Contact OYSI directly for availability, specifications, and delivery options across European markets while ensuring all regulatory requirements are met.