Benzene-1,4-diol

Benzene-1,4-diol is an organic chemical compound with the molecular formula C6H6O2 and CAS number 123-31-9. Also known as hydroquinone, it consists of a benzene ring with two hydroxyl groups positioned opposite each other. With a molecular weight of 110.11 g/mol, this aromatic diol is classified as a hazardous substance due to its potential carcinogenic and mutagenic properties, requiring careful handling in industrial applications.

Benzene-1,4-diol appears as white crystalline needles or powder at room temperature. It has a molecular weight of 110.11 g/mol and exhibits good solubility in water, alcohol, and ether. The compound is sensitive to light and air, readily oxidizing to form quinones. It sublimes at room temperature and has a characteristic phenolic odor. Due to its aromatic structure with two hydroxyl groups, it demonstrates both reducing and chelating properties.

Benzene-1,4-diol serves primarily as a reducing agent and antioxidant in various industrial applications. It is widely used in photographic developers, rubber processing as an antioxidant, and in the production of dyes and pigments. The compound also finds applications in cosmetic formulations, polymerization inhibitors, and as an intermediate in pharmaceutical synthesis. Its reducing properties make it valuable in analytical chemistry and various chemical manufacturing processes.

Benzene-1,4-diol requires strict safety measures due to its carcinogenic and mutagenic classification. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection. Work in well-ventilated areas or under fume hoods to prevent inhalation. Avoid skin and eye contact completely. Use non-sparking tools and prevent dust formation. Ensure emergency eyewash stations and safety showers are readily accessible during handling operations.

Benzene-1,4-diol must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers protected from light and air to prevent oxidation. Store separately from strong oxidizing agents, bases, and incompatible materials. Maintain storage temperatures below 25°C and ensure the storage area is equipped with appropriate spill containment measures. Regular inventory checks help prevent degradation over time.

Immediate action is crucial upon contact with benzene-1,4-diol. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, rinse immediately with clean water for 15-20 minutes while holding eyelids open. If inhaled, move to fresh air immediately. For ingestion, rinse mouth and seek immediate medical attention. Always consult a physician after any exposure incident.

Benzene-1,4-diol disposal must comply with local and European waste regulations as hazardous chemical waste. Never dispose of this substance through regular waste streams or pour down drains. Contact licensed hazardous waste disposal companies for proper treatment, which typically involves high-temperature incineration in specialized facilities. Maintain proper documentation of waste disposal activities. Empty containers may also require special handling due to potential residue contamination.

Benzene-1,4-diol is classified under ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transportation purposes. It requires appropriate packaging according to ADR regulations, including proper labeling with GHS pictograms (GHS08, GHS07, GHS05, GHS09) and hazard information. Transport documents must include the correct shipping name and UN identification number. Only qualified carriers with proper training and equipment should handle transportation of this hazardous material.

Benzene-1,4-diol is subject to comprehensive European chemical regulations including REACH registration requirements and CLP classification standards. It carries multiple hazard classifications including carcinogenic (Carc. 2) and mutagenic (Muta. 2) properties. While not currently listed as a Substance of Very High Concern (SVHC), its hazardous properties require strict compliance with occupational health and safety regulations. Users must maintain safety data sheets and implement appropriate risk management measures.

Benzene-1,4-diol is available through OYSI, a professional European distributor of technical chemicals. As specialized chemical distributors, OYSI provides this compound with full regulatory compliance including proper documentation, safety data sheets, and appropriate packaging. Professional customers can contact OYSI for availability, technical specifications, and delivery options across Europe. Given the hazardous nature of this substance, purchases are typically restricted to qualified industrial and research users only.