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. This colorless liquid has a molecular weight of 84.16 g/mol and belongs to the cycloalkane family. Cyclohexane is highly flammable and poses various health and environmental hazards, requiring careful handling in industrial applications.

Cyclohexane is a colorless, volatile liquid with a characteristic sweet odor at room temperature. It has a boiling point of approximately 81°C and a melting point of 6.5°C. The compound is practically insoluble in water but miscible with most organic solvents including alcohols, ethers, and hydrocarbons. It has a density of about 0.78 g/cm³ and exhibits high vapor pressure, making it easily evaporable.

Cyclohexane is primarily used as a solvent in industrial processes and as an intermediate in chemical synthesis. It serves as a key raw material for producing nylon precursors, particularly adipic acid and caprolactam. The compound is also utilized in paint thinners, adhesives, and extraction processes. Additionally, cyclohexane finds applications in analytical chemistry as a non-polar solvent and in the rubber industry for various manufacturing processes.

Cyclohexane requires strict safety measures due to its flammable and toxic properties. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to prevent vapor accumulation. Eliminate all ignition sources as the substance is highly flammable (Flam. Liq. 2). Avoid skin contact as it may cause irritation (Skin Irrit. 2) and prevent inhalation to avoid respiratory effects.

Cyclohexane must be stored in tightly closed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Keep containers in areas with appropriate fire suppression systems and ensure proper grounding to prevent static electricity buildup. Store away from incompatible materials such as strong oxidizing agents. Maintain storage temperatures below the boiling point and regularly inspect containers for leaks or damage to prevent vapor accumulation.

Cyclohexane contact requires immediate first aid measures. 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 water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air and monitor breathing. If ingested, do not induce vomiting due to aspiration toxicity risk and seek immediate medical attention.

Cyclohexane disposal must comply with local and national environmental regulations due to its aquatic toxicity classification. The substance should never be poured down drains or disposed of in regular waste. Contact licensed waste management companies for proper disposal through methods such as incineration at appropriate facilities or solvent recovery processes. Small quantities may be collected by specialized hazardous waste services, ensuring proper labeling and documentation throughout the disposal process.

Cyclohexane is classified as ADR Class 3 (flammable liquid), Packing Group II, requiring specific transport regulations. Containers must meet UN packaging standards and be properly labeled with appropriate hazard markings and UN identification numbers. Transport vehicles need proper ventilation and fire suppression equipment. Drivers must hold ADR certification for dangerous goods transport. Shipping documents must include proper shipping names, hazard classes, and emergency response information according to international transport regulations.

Cyclohexane is subject to various regulatory frameworks including REACH registration in Europe and CLP classification requirements. The substance is not currently listed as a Substance of Very High Concern (SVHC). It must be classified with appropriate GHS pictogrammes (GHS02, GHS08, GHS07, GHS09) and carry the danger signal word. Workplace exposure limits apply in most jurisdictions, and environmental discharge restrictions exist due to its aquatic toxicity classification.

Cyclohexane is available through OYSI, a European distributor of technical chemicals serving industrial customers across the continent. OYSI provides cyclohexane in various packaging sizes suitable for different industrial applications. As a specialized chemical distributor, OYSI ensures proper documentation, regulatory compliance, and technical support for cyclohexane purchases. Contact OYSI directly for specific availability, technical specifications, and delivery options to your location within Europe.