4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is an organic chemical compound with the molecular formula C23H28O4 and CAS number 40278-59-9. This substance belongs to the chromene family and features a spiro structure with two chromene rings connected through a central carbon atom. With a molecular weight of 368.5 g/mol, it contains hydroxyl groups and multiple methyl substituents that influence its chemical properties and potential applications.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is a solid organic compound at room temperature with a molecular weight of 368.5 g/mol. The presence of hydroxyl groups and the spiro-chromene structure suggest limited water solubility but good solubility in organic solvents. The multiple methyl groups provide steric hindrance and influence its reactivity. Specific physical properties such as melting point, boiling point, and exact solubility values would require analytical characterization for precise determination.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is primarily used in specialized chemical applications where its unique spiro-chromene structure provides specific properties. Its applications may include use as an intermediate in organic synthesis, research and development projects, or as a component in specialized formulations. The presence of hydroxyl groups and the rigid spiro structure make it valuable for applications requiring specific molecular geometry and reactivity patterns in industrial chemistry processes.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol should be handled with standard laboratory safety precautions including wearing appropriate personal protective equipment such as safety glasses, gloves, and lab coats. Work in well-ventilated areas or under fume hoods to avoid inhalation. Although no specific GHS signal word is assigned, the compound's classification as Aquatic Chronic 2 indicates environmental precautions are necessary. Avoid release to the environment and follow good industrial hygiene practices during handling operations.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. The storage area should be protected from moisture to prevent degradation of the compound. Keep containers properly labeled and store away from incompatible materials. Due to its Aquatic Chronic 2 classification, ensure storage areas have appropriate containment measures to prevent environmental release in case of spills or container damage.

In case of skin contact with 4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol, immediately wash the affected area with plenty of soap and water for at least 15 minutes. For eye contact, rinse thoroughly with clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult the safety data sheet for specific first aid measures and contact emergency services if severe symptoms occur.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol must be disposed of according to local and national environmental regulations due to its Aquatic Chronic 2 classification. Do not dispose of in regular waste streams or discharge into sewers, waterways, or soil. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities may be suitable for incineration at authorized facilities with appropriate emission controls. Always consult local environmental authorities for specific disposal requirements in your region.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is classified as ADR Class 9 (Miscellaneous Dangerous Goods), Packing Group III for transportation. This classification requires appropriate packaging, labeling, and documentation according to ADR regulations. Use UN-approved packaging suitable for Packing Group III substances. Vehicles must display appropriate placards and drivers require ADR certification. Transport documents must include proper shipping names, UN numbers, and hazard classifications. Ensure compliance with all applicable transport regulations for dangerous goods.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is subject to REACH regulation in Europe and must comply with CLP classification requirements, displaying GHS09 environmental hazard pictogram. The substance is classified as Aquatic Chronic 2 under CLP, requiring appropriate environmental risk management measures. It is not currently listed as a Substance of Very High Concern (SVHC). Users must ensure compliance with occupational health and safety regulations and environmental protection laws in their respective countries.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is available through OYSI, a specialized European distributor of technical chemical products. OYSI provides professional chemical supply services with proper documentation, safety data sheets, and regulatory compliance support. As a specialized compound, availability may be subject to minimum order quantities and lead times. Contact OYSI directly for current availability, technical specifications, and pricing information to meet your specific application requirements in the European market.