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 compound with the molecular formula C23H28O4 and CAS number 40278-59-9. This spirobi-chromene derivative has a molecular weight of 368.5 g/mol and features a unique spirocyclic structure with two chromene rings connected through a spiro center. The compound contains multiple methyl substituents and hydroxyl groups, making it a complex polyphenolic structure with specific chemical properties.

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 aromatic chromene rings suggest moderate polarity, likely affecting its solubility characteristics. The compound's spirocyclic structure and multiple methyl groups contribute to its stability and specific physical properties, though detailed data on melting point, boiling point, and solubility would require specific analytical characterization.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is primarily used in specialty chemical applications due to its unique spirocyclic chromene structure. The compound's phenolic nature and structural characteristics make it suitable for research applications, potentially in materials science, organic synthesis, or as an intermediate in pharmaceutical development. Its specific applications depend on its photochemical properties and reactivity, typical of chromene derivatives used in advanced chemical formulations.

Handle 4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol 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 prevent inhalation. Although no specific signal word is assigned, avoid direct contact with skin and eyes. Ensure proper hygiene practices including hand washing after handling and avoid eating, drinking, or smoking in work areas.

Store 4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol in tightly sealed containers in a cool, dry place away from direct sunlight and heat sources. Given its chromene structure, protection from light is particularly important to prevent photochemical degradation. Keep the material in original packaging when possible, ensure proper labeling, and store away from incompatible materials. Maintain storage areas with appropriate temperature control and ventilation to preserve product integrity.

In case of skin contact with 4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol, immediately wash affected area with plenty of soap and water for at least 15 minutes. For eye contact, rinse thoroughly with clean water for several minutes and remove contact lenses if present. If inhaled, move to fresh air immediately. In case of ingestion, rinse mouth and drink water if conscious. Seek medical attention if irritation persists or if large quantities are involved.

Dispose of 4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol according to local and national environmental regulations. The compound is classified as Aquatic Chronic 2, indicating potential environmental impact, so it requires careful disposal through authorized waste management facilities. Do not discharge to drains, water sources, or soil. Contact licensed chemical waste disposal companies for proper treatment and destruction. Ensure proper documentation and tracking of waste disposal in accordance with regulatory requirements.

Transport 4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol as ADR Class 9 (Miscellaneous Dangerous Goods), Packing Group III. This classification indicates it poses a lower degree of danger during transport but still requires compliance with dangerous goods regulations. Use appropriate packaging materials that meet UN specification requirements, ensure proper labeling with GHS09 environmental hazard pictogram, and include necessary transport documentation. Follow ADR guidelines for loading, handling, and emergency procedures during transportation.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is subject to REACH regulation for chemical registration and CLP regulation for classification and labeling in the EU. The compound is classified under GHS as Aquatic Chronic 2, requiring appropriate hazard communication. It is not currently identified as a Substance of Very High Concern (SVHC). Manufacturers and importers must comply with registration requirements, safety data sheet provisions, and proper hazard classification according to European chemical legislation.

4,4,4',4',7,7'-hexamethyl-2,2'-spirobi[3H-chromene]-6,6'-diol is available through OYSI, a specialized European distributor of chemical products. OYSI provides access to this specialty compound for research and industrial applications across Europe, ensuring compliance with local regulations and proper documentation. Contact OYSI directly for availability, technical specifications, and procurement details. As a professional chemical distributor, OYSI can provide the necessary safety data sheets, certificates of analysis, and regulatory documentation required for this compound.