Cyclohexane

Cyclohexane is a saturated cyclic hydrocarbon with the molecular formula C6H12 and CAS number 110-82-7. It consists of six carbon atoms arranged in a ring structure with twelve hydrogen atoms. With a molecular weight of 84.16 g/mol, cyclohexane is a colorless, flammable liquid at room temperature. It belongs to the cycloalkane family and is widely used as an industrial solvent and chemical intermediate in various manufacturing processes.

Cyclohexane is a colorless liquid with a characteristic sweet, gasoline-like odor at room temperature. It has a boiling point of 80.7°C and a melting point of 6.6°C. The substance is practically insoluble in water but miscible with most organic solvents including alcohols, ethers, and hydrocarbons. It has a density of approximately 0.78 g/cm³ and exhibits low viscosity. Cyclohexane is highly volatile and forms flammable vapor-air mixtures.

Cyclohexane is primarily used as a solvent in the chemical industry and as an intermediate in organic synthesis. It serves as a key raw material for producing adipic acid and caprolactam, which are essential precursors for nylon manufacturing. Additionally, cyclohexane is employed in paint thinners, varnishes, and extraction processes. It also finds applications in analytical chemistry, rubber production, and as a non-polar solvent for various industrial cleaning operations.

Cyclohexane must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing due to its skin irritation properties. Work should be conducted in well-ventilated areas or under fume extraction systems to prevent vapor inhalation. Eliminate all ignition sources as cyclohexane is highly flammable (Flam. Liq. 2). Avoid skin contact and inhalation, and never eat, drink, or smoke while handling this substance.

Cyclohexane should be stored in tightly closed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Storage temperatures should remain below 25°C to minimize vapor formation. Keep containers away from incompatible materials such as strong oxidizing agents and acids. Storage areas must be equipped with appropriate fire suppression systems and spill containment measures. Ensure proper grounding and bonding of containers during transfer operations.

In case of skin contact, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. If cyclohexane gets in eyes, rinse immediately with plenty of clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately and keep them at rest. If swallowed, do not induce vomiting and seek immediate medical attention due to aspiration toxicity risks.

Cyclohexane waste must be disposed of according to local and national hazardous waste regulations as it is classified as flammable and environmentally hazardous. Contact licensed waste disposal companies for proper collection and treatment. Never pour cyclohexane down drains, sewers, or onto the ground due to its aquatic toxicity. Small quantities may be suitable for solvent recovery or incineration at authorized facilities. Always consult local environmental authorities for specific disposal requirements.

Cyclohexane is classified as ADR Class 3 (flammable liquids), Packing Group II, requiring specialized dangerous goods transportation procedures. Packages must bear appropriate hazard labels and markings according to international transport regulations. Vehicles must carry emergency equipment and drivers need ADR certification. Transport containers should be properly sealed, labeled, and secured to prevent leakage. Shipping documents must include proper shipping names and emergency response information.

Cyclohexane is regulated under European REACH and CLP regulations, requiring safety data sheets and hazard communication. It is not currently listed as a Substance of Very High Concern (SVHC) under REACH. However, due to its classification as flammable liquid with aspiration toxicity and environmental hazards, it is subject to workplace exposure limits and environmental discharge restrictions. Industrial users must comply with occupational safety regulations and environmental permits.

Cyclohexane is available through OYSI, a reliable European distributor of technical chemicals serving industrial customers across Europe. OYSI provides high-quality cyclohexane with proper documentation, safety data sheets, and regulatory compliance support. As a specialized chemical distributor, OYSI ensures reliable supply chains and technical expertise for industrial applications. Contact OYSI directly for pricing, availability, and delivery options tailored to your specific requirements and location within Europe.