Cyclopentene

Cyclopentene is an unsaturated cyclic hydrocarbon with the molecular formula C5H8 and CAS number 142-29-0. It consists of a five-membered carbon ring containing one double bond, making it a cycloalkene. With a molecular weight of 68.12 g/mol, cyclopentene is a volatile organic compound that serves as an important intermediate in organic synthesis and industrial chemical processes.

Cyclopentene is a colorless liquid at room temperature with a characteristic hydrocarbon odor. As an unsaturated hydrocarbon, it has a boiling point of approximately 44°C and is highly volatile. The compound is practically insoluble in water due to its hydrophobic nature but readily dissolves in organic solvents such as alcohols, ethers, and other hydrocarbons.

Cyclopentene is primarily used as an intermediate in organic synthesis and chemical manufacturing processes. It serves as a starting material for producing various cyclic compounds, polymers, and specialty chemicals. The compound is also utilized in research applications for studying cycloalkene chemistry and as a building block for synthesizing pharmaceuticals, agrochemicals, and other fine chemicals in industrial settings.

Cyclopentene should be handled with appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and protective clothing. Work in well-ventilated areas or under fume hoods to avoid inhalation of vapors. Keep away from ignition sources, heat, and open flames as it is a flammable liquid. Use explosion-proof electrical equipment and ensure proper grounding during transfer operations.

Cyclopentene must be stored in a cool, dry, well-ventilated area away from heat sources and ignition sources. Use appropriate containers made of compatible materials and ensure they are tightly sealed to prevent vapor release. Store separately from oxidizing agents and strong acids. Maintain storage temperatures below 25°C and implement appropriate fire prevention measures in storage areas.

In case of skin contact with cyclopentene, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water. For eye contact, flush immediately with plenty of clean water for at least 15 minutes and seek medical attention. If inhaled, move to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention.

Cyclopentene waste must be disposed of according to local and national hazardous waste regulations. The compound should never be poured down drains or disposed of with regular waste. Contact licensed waste disposal companies for proper collection and treatment. Small quantities may be recovered through distillation if economically viable, otherwise incineration at appropriate high-temperature facilities is recommended.

Cyclopentene is classified as ADR Class 3 (flammable liquids), Packing Group II for transportation purposes. It must be packaged in UN-approved containers and labeled with appropriate hazard markings. Transport vehicles must comply with ADR regulations for flammable liquids, including proper ventilation, fire extinguishing equipment, and driver training. Shipping documentation must include proper shipping names and hazard classifications.

Cyclopentene is regulated under European REACH legislation and must be registered for commercial use above specified tonnages. It falls under CLP regulation for classification and labeling requirements. The substance is not currently listed as a Substance of Very High Concern (SVHC). Users must comply with occupational exposure limits and implement appropriate risk management measures as outlined in safety data sheets.

Cyclopentene is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. OYSI provides high-quality cyclopentene with comprehensive documentation including certificates of analysis and safety data sheets. As an established chemical distributor, OYSI ensures reliable supply chains and regulatory compliance for professional users requiring this specialized hydrocarbon compound.