3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione is an organic chemical compound with the molecular formula C8H8O3 and CAS number 26266-63-7. This bicyclic anhydride derivative has a molecular weight of 152.15 g/mol and belongs to the benzofuran family. It is classified as a hazardous substance requiring careful handling due to its eye-damaging properties and potential to cause respiratory and skin sensitization.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione is a solid organic compound at room temperature with a molecular weight of 152.15 g/mol. As an anhydride derivative, it typically exhibits moderate to good solubility in organic solvents and may react with water under certain conditions. The compound's bicyclic structure contributes to its stability while maintaining reactivity at the anhydride functional groups.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione is primarily used as an intermediate in organic synthesis and chemical manufacturing processes. Its anhydride functionality makes it valuable for reactions involving esterification, amidation, and polymer synthesis. The compound serves as a building block in pharmaceutical intermediates, specialty chemicals production, and research applications requiring specific bicyclic anhydride structures.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione requires strict safety precautions due to its Eye Dam. 1, Resp. Sens. 1, and Skin Sens. 1 classifications. Essential PPE includes chemical-resistant gloves, safety goggles with side shields, and respiratory protection. Work in well-ventilated areas or under fume hoods to prevent inhalation. Avoid direct skin and eye contact, and ensure emergency eyewash stations are readily accessible.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione should be stored in a cool, dry place away from moisture and incompatible materials. Keep containers tightly sealed in original packaging to prevent contamination and degradation. Store away from strong bases, alcohols, and water sources due to its anhydride nature. Ensure adequate ventilation in storage areas and maintain temperatures below recommended maximums to preserve product integrity.

Immediate first aid is crucial for 3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione exposure. For eye contact, flush immediately with plenty of water for at least 15 minutes and seek medical attention urgently due to Eye Dam. 1 classification. Remove contaminated clothing and wash affected skin thoroughly with soap and water. If inhaled, move to fresh air immediately. Always seek professional medical advice for any exposure, especially given the sensitization potential.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione waste must be disposed of according to local and European waste regulations as hazardous chemical waste. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Never discharge into drains, soil, or water bodies due to Aquatic Chronic 3 classification. Contaminated packaging should also be treated as hazardous waste and disposed of through authorized channels.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione is classified as ADR Class 8 (corrosive substances), Packing Group III for transportation. Packages must comply with UN packaging requirements and display appropriate hazard labels and markings. Transport documents must include proper shipping names and emergency response information. Vehicles must carry appropriate emergency equipment, and drivers require ADR certification for hazardous goods transport.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione is subject to REACH regulation in Europe and CLP classification requirements. It carries GHS05 and GHS08 pictograms with 'Danger' signal word, indicating serious health hazards. The substance is not currently listed as SVHC under REACH. Users must comply with occupational exposure limits, safety data sheet requirements, and appropriate risk assessment procedures before use.

3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides reliable supply chains across Europe with proper documentation, safety data sheets, and regulatory compliance support. As a professional chemical distributor, OYSI ensures product quality, appropriate packaging, and technical support for industrial and research applications requiring this specialized anhydride compound.