Ethylbenzene

Ethylbenzene is an aromatic hydrocarbon with the chemical formula C8H10 and CAS number 100-41-4. It consists of a benzene ring with an ethyl group attached, having a molecular weight of 106.16 g/mol. This colorless liquid is classified as a flammable substance with moderate toxicity properties. Ethylbenzene is primarily used as an industrial chemical intermediate and solvent in various manufacturing processes.

Ethylbenzene is a colorless liquid at room temperature with a characteristic sweet, gasoline-like odor. It has a boiling point of approximately 136°C and a density of 0.87 g/cm³. The substance is practically insoluble in water but readily miscible with most organic solvents including alcohols, ethers, and hydrocarbons. It exhibits typical aromatic compound properties and is volatile at ambient temperatures.

Ethylbenzene is primarily used as a chemical intermediate in the production of styrene monomer, which is essential for manufacturing polystyrene plastics and synthetic rubber. It also serves as a solvent in various industrial applications including paints, coatings, and adhesives. Additionally, ethylbenzene is used in the petroleum industry as a component in gasoline blends and as a chemical feedstock for other aromatic compounds production.

Ethylbenzene requires careful handling due to its flammable and toxic properties. Wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when necessary. Work in well-ventilated areas or under fume extraction systems to prevent vapor accumulation. Eliminate all ignition sources as it forms flammable vapor-air mixtures. Avoid prolonged skin contact and inhalation to prevent acute and chronic health effects.

Ethylbenzene must be stored in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Use appropriate containers made of compatible materials and ensure proper grounding to prevent static electricity buildup. Store separately from strong oxidizing agents and incompatible materials. Maintain storage temperatures below 25°C when possible and ensure adequate fire suppression systems are available in the storage area.

Ethylbenzene exposure requires immediate response measures. For skin contact, remove contaminated clothing and wash thoroughly with soap and water for at least 15 minutes. If inhaled, move to fresh air immediately and seek medical attention if breathing difficulties occur. For eye contact, flush with clean water for 15 minutes and remove contact lenses if present. In case of ingestion, do not induce vomiting and seek immediate medical attention.

Ethylbenzene disposal must comply with local and national hazardous waste regulations. The substance cannot be disposed of in regular waste streams or sewage systems. Arrange disposal through licensed hazardous waste contractors who can ensure proper treatment or incineration at authorized facilities. Small quantities may require special collection procedures. Always consult local environmental authorities for specific disposal requirements and maintain proper documentation of waste disposal activities.

Ethylbenzene is classified under ADR as Class 3 (flammable liquid), Packing Group II, requiring specific transport regulations compliance. Packages must meet UN specification requirements and display appropriate hazard labels including GHS02, GHS07, and GHS08 pictograms. Transport vehicles must carry proper documentation, emergency response information, and appropriate fire extinguishing equipment. Drivers require ADR certification for dangerous goods transport.

Ethylbenzene is subject to various European regulations including REACH registration requirements and CLP classification as Flam. Liq. 2, Acute Tox. 4, Asp. Tox. 1, and STOT RE 2. While not currently listed as an SVHC substance, it requires safety data sheets and proper hazard communication. Industrial users must comply with occupational exposure limits and implement appropriate risk management measures under relevant workplace safety directives.

Ethylbenzene is available through OYSI, a specialized European distributor of industrial chemicals. OYSI provides ethylbenzene with proper documentation, safety data sheets, and regulatory compliance support across European markets. As a professional chemical distributor, OYSI ensures quality standards and reliable supply chains for industrial customers requiring this aromatic solvent for manufacturing applications.