Chlorobenzene

Chlorobenzene is an aromatic organic compound with the molecular formula C6H5Cl and CAS number 108-90-7. It consists of a benzene ring with one chlorine atom substituted for a hydrogen atom. With a molecular weight of 112.55 g/mol, chlorobenzene is classified as a flammable liquid with moderate toxicity and skin irritation properties. It appears as a colorless liquid with a characteristic sweet, almond-like odor and is widely used as an industrial solvent and chemical intermediate.

Chlorobenzene is a colorless, transparent liquid at room temperature with a distinctive sweet, almond-like odor. It has a boiling point of 131.7°C and a melting point of -45.6°C. The compound is practically insoluble in water but readily miscible with most organic solvents including alcohols, ethers, and hydrocarbons. It has a density of approximately 1.106 g/cm³ at 20°C and exhibits good chemical stability under normal conditions.

Chlorobenzene is primarily used as a solvent for paints, adhesives, rubber, and waxes due to its excellent dissolving properties. It serves as an important chemical intermediate in the production of phenol, aniline, and various pesticides. The compound is also utilized in the manufacture of dyes, pharmaceuticals, and specialty chemicals. Additionally, chlorobenzene finds application in metal degreasing operations and as a heat transfer medium in certain industrial processes.

Chlorobenzene must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing to prevent skin contact. Work should be conducted in well-ventilated areas or under local exhaust ventilation to minimize inhalation exposure. Avoid contact with heat sources, sparks, and open flames as it is a flammable liquid. Use non-sparking tools and ensure proper grounding of equipment. Always wash hands thoroughly after handling and avoid eating, drinking, or smoking in work areas.

Chlorobenzene should be stored in tightly closed containers in a cool, dry, and well-ventilated area away from heat sources, ignition sources, and direct sunlight. Storage areas must be equipped with appropriate fire suppression systems due to its flammable nature. Keep containers away from incompatible materials such as strong oxidizing agents and alkali metals. Ensure proper secondary containment and regularly inspect containers for leaks or damage. Storage temperature should remain below 25°C when possible.

Immediate action is required upon contact with chlorobenzene. For skin contact, remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. If eye contact occurs, flush immediately with clean water for 15-20 minutes and remove contact lenses if easily removable. In case of inhalation, move the person to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention. Always consult a physician after any significant exposure.

Chlorobenzene must be disposed of as hazardous waste through licensed waste management facilities in accordance with local and EU regulations. Never dispose of it down drains, sewers, or into the environment due to its aquatic toxicity. Small quantities should be collected in appropriate containers and labeled clearly for hazardous waste collection. Larger quantities require professional hazardous waste disposal services. Always consult local environmental authorities for specific disposal requirements and ensure compliance with REACH and waste framework directive regulations.

Chlorobenzene is classified under ADR as Class 3 (flammable liquids), Packing Group III, requiring specific transport regulations. 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. Shipping documents must include the proper shipping name, UN number, and hazard class. Only authorized carriers with ADR certification should transport this substance.

Chlorobenzene is regulated under multiple European frameworks including REACH, CLP, and ADR regulations. It requires registration under REACH and must be classified and labeled according to CLP with Warning signal word and GHS pictograms GHS02, GHS07, and GHS09. However, it is not currently listed as a Substance of Very High Concern (SVHC). Users must comply with occupational exposure limits and environmental discharge restrictions. Industrial users may require specific permits depending on quantities handled and local regulations.

Chlorobenzene is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As a professional chemical distributor, OYSI provides high-quality chlorobenzene with proper documentation, safety data sheets, and regulatory compliance support. We serve various industries requiring this solvent and chemical intermediate. Contact OYSI directly for specific grades, packaging options, and delivery arrangements to your location within Europe. Professional technical support is available for all product inquiries.