Cumene

Cumene is an aromatic hydrocarbon with the chemical formula C9H12 and molecular weight of 120.19 g/mol. Also known as isopropylbenzene, it consists of a benzene ring with an attached isopropyl group. This colorless liquid is primarily used as an industrial intermediate in chemical manufacturing processes, particularly in the production of phenol and acetone through the cumene process.

Cumene is a colorless liquid at room temperature with a characteristic aromatic odor. It has a boiling point of approximately 152°C and is practically insoluble in water but miscible with most organic solvents. The compound has a density lower than water and is volatile, contributing to its flammable nature. Its aromatic structure gives it stability while the isopropyl group affects its reactivity.

Cumene is primarily used as an intermediate in the petrochemical industry for producing phenol and acetone via the cumene process. It serves as a solvent in various industrial applications and as a component in gasoline blending to improve octane rating. Additionally, cumene is used in the manufacture of other chemicals including α-methylstyrene and various phenolic compounds used in plastics and resins production.

Cumene requires careful handling due to its flammable and carcinogenic properties. Use appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection in poorly ventilated areas. Work in well-ventilated spaces away from ignition sources, heat, and sparks. Avoid skin contact and inhalation of vapors. Ensure proper grounding of equipment to prevent static electricity buildup during transfer operations.

Cumene should be stored in cool, dry, well-ventilated areas away from heat sources, sparks, and open flames. Use appropriate containers made of compatible materials and ensure proper labeling with hazard information. Keep away from oxidizing agents and strong acids. Maintain storage temperature below 25°C when possible and ensure adequate fire suppression systems are in place. Regularly inspect containers for leaks or deterioration.

In case of skin contact with cumene, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. If inhaled, move person to fresh air and seek medical attention if breathing difficulties occur. For eye contact, rinse immediately with plenty of water for 15 minutes. In case of ingestion, do not induce vomiting and seek immediate medical attention.

Cumene disposal must comply with local and national waste regulations as it is classified as hazardous waste. Do not pour down drains or dispose of in regular waste. Contact licensed waste disposal companies for proper treatment, which may include incineration at authorized facilities. Small quantities should be collected in appropriate containers and labeled clearly. Recovery and recycling should be considered where economically feasible.

Cumene is classified under ADR as Class 3 (Flammable Liquids), Packing Group III for transport purposes. It must be packaged in UN-approved containers with proper hazard labels and documentation. Transport vehicles must comply with ADR requirements including appropriate placarding, emergency equipment, and driver training. Ensure proper segregation from incompatible materials and follow temperature control requirements during transport.

Cumene is subject to strict regulations under REACH and CLP due to its classification as Carcinogenic 1B and other hazardous properties. It requires safety data sheets and proper hazard communication. As a flammable liquid with health hazards, it falls under various workplace safety regulations. Companies must ensure proper risk assessments, worker training, and exposure monitoring. Some applications may require specific permits or notifications.

Cumene is available through specialized chemical distributors across Europe, including OYSI, which supplies high-quality chemicals to industrial customers throughout the European market. When purchasing, ensure suppliers provide proper documentation including safety data sheets, certificates of analysis, and compliance with REACH regulations. Choose suppliers with experience in handling hazardous materials and appropriate logistics capabilities for safe delivery.