Cumene

Cumene is an aromatic hydrocarbon with the molecular formula C9H12 and CAS number 98-82-8. This colorless liquid compound, also known as isopropylbenzene, has a molecular weight of 120.19 g/mol and belongs to the benzene derivatives family. It is classified as a flammable liquid with carcinogenic properties and represents an important industrial chemical intermediate used primarily in petrochemical processes.

Cumene is a colorless liquid at room temperature with a characteristic sweet, gasoline-like odor. It has a boiling point of approximately 152°C and a melting point of -96°C. The compound is practically insoluble in water but readily soluble in organic solvents such as alcohol, ether, and benzene. Its density is lower than water at about 0.86 g/cm³, and it exhibits typical aromatic compound characteristics.

Cumene is primarily used as an intermediate in the production of phenol and acetone through the cumene process, which accounts for about 95% of its industrial consumption. It also serves as a raw material for manufacturing alpha-methylstyrene, acetophenone, and various other chemical intermediates. Additionally, cumene finds applications as a solvent in paint thinners and as an additive in aviation gasoline to improve octane ratings.

Cumene requires strict safety measures due to its flammable and carcinogenic nature. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and respiratory protection in poorly ventilated areas. Work should be conducted in well-ventilated spaces away from ignition sources, heat, and sparks. Avoid skin contact and inhalation of vapors. Emergency eyewash stations and safety showers should be readily accessible in work areas.

Cumene must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Storage areas should be equipped with appropriate fire suppression systems and maintain temperatures below 25°C. The chemical should be kept away from strong oxidizing agents and incompatible materials. Storage facilities must comply with local fire codes and regulations for flammable liquids.

Immediate action is required upon cumene exposure. For skin contact, remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, rinse immediately with plenty of clean water for 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical care.

Cumene disposal must comply with local, national, and international hazardous waste regulations. The chemical cannot be disposed of in regular waste streams or sewage systems due to its environmental and health hazards. Professional hazardous waste disposal services should handle cumene waste through approved methods such as incineration at licensed facilities. Empty containers require proper cleaning and disposal as hazardous waste unless completely decontaminated.

Cumene is classified under ADR as Class 3 (flammable liquids), Packing Group III, requiring specific transport regulations compliance. It must be packaged in UN-approved containers with proper hazard labels and documentation. Transport vehicles need appropriate placarding and emergency equipment. Drivers require ADR certification for dangerous goods transport, and shipments must follow designated routes with proper emergency response information readily available.

Cumene is subject to comprehensive European regulations including REACH registration requirements and CLP classification as Flam. Liq. 3, Carc. 1B, Asp. Tox. 1, STOT SE 3, and Aquatic Chronic 2. It carries the 'Danger' signal word with multiple GHS pictograms. While not currently listed as a SVHC substance, its carcinogenic classification means it faces strict occupational exposure limits and workplace safety requirements under various national implementations.

Cumene is available through specialized chemical distributors across Europe, with OYSI being a reliable European supplier for industrial customers. When sourcing cumene, ensure the supplier provides complete safety documentation, certificates of analysis, and compliance with REACH regulations. Professional distributors like OYSI can provide technical support, proper packaging, and logistics solutions tailored to your specific industrial requirements while ensuring full regulatory compliance.