Cyclopentanone

Cyclopentanone is a cyclic ketone with the molecular formula C5H8O and CAS number 120-92-3. It is an organic compound consisting of a five-membered carbon ring with one ketone functional group. With a molecular weight of 84.12 g/mol, cyclopentanone is classified as a flammable liquid and mild irritant. It appears as a colorless liquid with a characteristic odor and is widely used as an intermediate in organic synthesis and industrial applications.

Cyclopentanone is a colorless liquid at room temperature with a pleasant, mint-like odor. It has a molecular weight of 84.12 g/mol and the molecular formula C5H8O. The compound is moderately soluble in water and completely miscible with most organic solvents including alcohols, ethers, and hydrocarbons. It exhibits typical ketone reactivity and is relatively stable under normal conditions, though it should be protected from strong oxidizing agents and heat sources.

Cyclopentanone serves primarily as an intermediate in organic synthesis for pharmaceutical and chemical manufacturing. It is used in the production of pharmaceuticals, agrochemicals, and specialty chemicals. The compound finds applications in the synthesis of cyclopentanol, various pharmaceutical intermediates, and as a solvent in specific industrial processes. It is also utilized in research laboratories for organic synthesis reactions and as a building block for more complex cyclic compounds.

Cyclopentanone requires careful handling due to its flammable nature and irritant properties. Use appropriate personal protective equipment including safety glasses, chemical-resistant gloves, and protective clothing. Ensure adequate ventilation to prevent vapor accumulation and eliminate ignition sources. Work in well-ventilated areas or under fume hoods. Avoid direct skin and eye contact, and prevent inhalation of vapors. Keep containers tightly closed when not in use and ground equipment to prevent static electricity buildup.

Cyclopentanone should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Keep containers away from incompatible materials such as strong oxidizing agents and strong bases. Store in original containers or approved chemical storage vessels. Maintain storage temperatures below 25°C when possible and protect from direct sunlight. Ensure storage areas are equipped with appropriate fire suppression systems and spill containment measures.

Skin contact with cyclopentanone requires immediate removal of contaminated clothing and thorough washing of the affected area with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Remove from exposure and ensure adequate ventilation. Seek medical attention if irritation persists or if large amounts were involved. Do not induce vomiting if ingested.

Cyclopentanone disposal must comply with local, national, and EU waste regulations. The compound should be treated as hazardous chemical waste and disposed of through licensed waste management companies. Do not pour down drains or dispose of in regular waste. Small quantities can potentially be incinerated in approved high-temperature facilities with proper emission controls. Consult local environmental authorities for specific disposal requirements and approved waste treatment facilities in your region.

Cyclopentanone is classified under ADR as Class 3 (Flammable Liquids), Packing Group III for transportation purposes. It requires appropriate hazardous goods packaging, labeling, and documentation according to ADR regulations. Vehicles must carry proper placarding and emergency response information. Drivers require ADR certification for dangerous goods transport. Packages must be properly sealed, labeled with GHS02 and GHS07 pictograms, and accompanied by safety data sheets and transport documentation.

Cyclopentanone is regulated under the EU CLP Regulation with classifications including Flam. Liq. 3, Skin Irrit. 2, and Eye Irrit. 2, requiring Warning signal word and GHS02/GHS07 pictograms. It falls under REACH regulation requiring registration for import/manufacture above one tonne annually. The compound is not currently listed as a Substance of Very High Concern (SVHC). Users must comply with occupational exposure limits and workplace safety regulations in their respective countries.

Cyclopentanone is available through OYSI, a European distributor of technical chemicals serving the industrial market. OYSI provides reliable supply of quality cyclopentanone with proper documentation, safety data sheets, and regulatory compliance support across Europe. As a specialized chemical distributor, OYSI ensures proper handling, packaging, and delivery according to ADR transport regulations. Contact OYSI directly for availability, specifications, and pricing information for your specific requirements.