Furan-2,5-dione

Furan-2,5-dione is an organic chemical compound with the molecular formula C4H2O3 and CAS number 108-31-6. Also known as maleic anhydride, it is a highly reactive cyclic anhydride with a molecular weight of 98.06 g/mol. This compound is classified as a hazardous substance with multiple danger classifications including acute toxicity, skin corrosion, eye damage, and respiratory sensitization properties.

Furan-2,5-dione appears as white crystalline needles or pellets at room temperature with a sharp, acrid odor. It has a melting point of 52.8°C and readily sublimes, creating vapors that can be irritating. The compound is highly soluble in water, undergoing hydrolysis to form maleic acid, and is also soluble in acetone, chloroform, and dioxane but insoluble in petroleum ether.

Furan-2,5-dione serves as a crucial industrial intermediate in the production of unsaturated polyester resins, alkyd resins, and copolymers. It is extensively used in manufacturing synthetic fibers, plasticizers, and agricultural chemicals. The compound also finds applications in the production of malic acid, tartaric acid, and various pharmaceutical intermediates, making it essential for chemical synthesis processes across multiple industries.

Furan-2,5-dione requires strict safety measures due to its corrosive and sensitizing properties. Always wear appropriate PPE including chemical-resistant gloves, safety goggles, and respiratory protection. Work in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid direct skin and eye contact, and ensure emergency shower and eyewash stations are readily accessible. Handle with non-sparking tools and avoid generating dust.

Furan-2,5-dione should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep away from bases, alcohols, and strong oxidizing agents to prevent dangerous reactions. Storage areas must be equipped with appropriate spill containment measures and maintain temperatures below 25°C to prevent sublimation. Ensure containers are properly labeled and stored according to segregation requirements.

Immediate action is critical upon contact with furan-2,5-dione due to its corrosive nature. For skin contact, immediately remove contaminated clothing and flush with copious amounts of water for at least 15 minutes. In case of eye contact, rinse thoroughly with water for 15-20 minutes and remove contact lenses if present. If inhaled, move to fresh air immediately. Seek medical attention promptly for all exposure routes.

Furan-2,5-dione disposal must comply with local, national, and international waste regulations as it is classified as hazardous waste. Do not discharge into sewers, waterways, or soil. Small quantities can be neutralized carefully with dilute alkali solution under controlled conditions. Large quantities require disposal through licensed hazardous waste contractors. Contaminated packaging should also be treated as hazardous waste and disposed of accordingly.

Furan-2,5-dione is classified as ADR Class 8 (corrosive substances) Packing Group III for transportation purposes. It must be packaged in approved containers meeting UN specification requirements and properly labeled with appropriate hazard placards. Transport vehicles must carry appropriate emergency equipment and documentation. Drivers require ADR certification, and transport must comply with routing restrictions and quantity limitations for dangerous goods.

Furan-2,5-dione is subject to comprehensive chemical regulations including REACH registration requirements in Europe and CLP classification obligations. While not currently listed as an SVHC, it requires safety data sheets and hazard communication due to its multiple danger classifications. Industrial users must implement appropriate risk management measures and may be subject to occupational exposure limits and workplace monitoring requirements under national health and safety legislation.

Furan-2,5-dione is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As an established chemical supplier, OYSI provides high-quality furan-2,5-dione with proper documentation, safety data sheets, and regulatory compliance support. Contact OYSI directly for availability, specifications, and delivery options to meet your specific industrial requirements while ensuring full regulatory compliance.