Cyclohexa-2,5-diene-1,4-dione

Cyclohexa-2,5-diene-1,4-dione is an organic chemical compound with the molecular formula C6H4O2 and CAS number 106-51-4. This cyclic diketone has a molecular weight of 108.09 g/mol and belongs to the quinone family. It is classified as a hazardous substance with acute toxicity and irritant properties, requiring careful handling in industrial applications.

Cyclohexa-2,5-diene-1,4-dione typically appears as yellow crystalline solid at room temperature with a characteristic pungent odor. The compound has moderate solubility in organic solvents and limited water solubility. Its quinone structure makes it susceptible to reduction reactions and it can undergo various chemical transformations typical of α,β-unsaturated carbonyl compounds.

Cyclohexa-2,5-diene-1,4-dione serves as an important intermediate in organic synthesis and pharmaceutical manufacturing. It is commonly used in the production of dyes, pigments, and various chemical compounds. The substance also finds applications in research laboratories for organic synthesis reactions and as a reagent in chemical analysis processes.

Cyclohexa-2,5-diene-1,4-dione requires careful handling due to its Acute Tox. 3 classification and irritant properties. Workers must wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation in work areas and avoid skin and eye contact. Handle only in well-ventilated areas or under fume hoods to prevent inhalation exposure.

Cyclohexa-2,5-diene-1,4-dione should be stored in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers tightly closed and protected from light and moisture. Store away from strong reducing agents and bases. Ensure storage areas are equipped with appropriate spill containment measures and maintain temperatures within recommended ranges to prevent degradation.

Skin contact with cyclohexa-2,5-diene-1,4-dione requires immediate removal of contaminated clothing and thorough washing with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention.

Cyclohexa-2,5-diene-1,4-dione disposal must comply with local and national hazardous waste regulations due to its toxic and environmentally hazardous properties. The substance should be collected as hazardous chemical waste and disposed of through licensed waste management facilities. Never dispose of in regular trash, sewers, or water systems due to its Aquatic Acute 1 classification.

Cyclohexa-2,5-diene-1,4-dione is classified under ADR Class 6.1 (toxic substances), Packing Group II, indicating significant transport restrictions. Shipments require appropriate UN-specification packaging, proper labeling with GHS06 and GHS09 pictograms, and transport documentation. Only authorized carriers trained in hazardous materials transport should handle shipments of this substance across European borders.

Cyclohexa-2,5-diene-1,4-dione is subject to REACH regulation and CLP classification requirements in Europe. While not currently listed as an SVHC substance, its Acute Tox. 3 and environmental hazard classifications require compliance with safety data sheet provisions, risk assessments, and worker protection measures. Users must follow occupational exposure limits and environmental discharge restrictions.

Cyclohexa-2,5-diene-1,4-dione is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides this substance to industrial customers across Europe with proper documentation, safety data sheets, and regulatory compliance support. Contact OYSI directly for availability, technical specifications, and delivery options to your specific European location.