Disodium;selenate

Disodium selenate is an inorganic sodium salt of selenic acid with the chemical formula Na2O4Se and CAS number 13410-01-0. This compound has a molecular weight of 188.95 g/mol and appears as a white crystalline solid. It contains selenium in its highest oxidation state (+6) and is highly soluble in water. Disodium selenate is primarily used as a source of selenium in various industrial applications and research purposes.

Disodium selenate is a white crystalline powder that is highly soluble in water, forming clear solutions. It is odorless and stable under normal conditions. The compound has a molecular weight of 188.95 g/mol and melts at approximately 875°C. It exhibits hygroscopic properties, meaning it can absorb moisture from the air. When dissolved in water, it dissociates into sodium and selenate ions, creating an alkaline solution.

Disodium selenate is used primarily as a selenium source in various industrial applications including glass manufacturing, ceramics production, and as a nutritional supplement in animal feed formulations. It serves as a reagent in analytical chemistry and research laboratories. The compound is also utilized in the electronics industry for semiconductor applications and in specialized chemical synthesis processes where selenium compounds are required as intermediates or catalysts.

Disodium selenate requires careful handling with appropriate personal protective equipment including nitrile gloves, safety goggles, and lab coats. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation. Avoid generating dust and prevent contact with skin, eyes, and mucous membranes. Use non-sparking tools when handling and ensure proper grounding to prevent static electricity buildup. Always wash hands thoroughly after handling.

Disodium selenate should be stored in tightly sealed containers in a cool, dry place away from direct sunlight and heat sources. Keep containers in a well-ventilated area and protect from moisture due to its hygroscopic nature. Store separately from incompatible materials such as strong acids and reducing agents. Ensure proper labeling and maintain storage temperature below 25°C. Use appropriate secondary containment to prevent environmental release in case of container failure.

In case of skin contact with disodium selenate, immediately remove contaminated clothing and flush the affected area with plenty of water for at least 15 minutes. If eye contact occurs, rinse eyes thoroughly with clean water for 15-20 minutes while keeping eyelids open. In case of inhalation, move the person to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention. Always consult a physician after any significant exposure.

Disodium selenate must be disposed of as hazardous waste through licensed waste disposal companies in accordance with local and European regulations. Do not discharge into drains, sewers, or the environment. Small laboratory quantities should be collected in appropriate waste containers and labeled properly. Large quantities require special handling and documentation. Contact your local environmental authority for specific disposal requirements and approved disposal facilities in your region.

Disodium selenate is classified under ADR Class 6.1 (toxic substances) Packing Group I, indicating high toxicity requiring strict transport regulations. It must be packaged in UN-approved containers with proper hazard labels and documentation. Transport vehicles must carry appropriate placards and emergency response information. Only trained personnel should handle the transport, and specific routing restrictions may apply. Ensure compliance with European ADR regulations for dangerous goods transport.

Disodium selenate is subject to various European chemical regulations including REACH registration requirements for commercial use above certain tonnages. It falls under CLP regulation for classification, labeling, and packaging requirements. The substance is not currently listed as a SVHC (Substance of Very High Concern). Industrial users must comply with workplace safety regulations and may need to implement risk management measures depending on usage quantities and applications.

Disodium selenate is available through OYSI, a European distributor of specialty chemicals serving various industries across Europe. OYSI provides reliable supply chains and technical support for customers requiring high-quality selenium compounds. For purchasing inquiries, contact OYSI directly to discuss specifications, quantities, and delivery requirements. They can provide detailed product documentation, safety data sheets, and regulatory compliance information to meet your specific application needs.