1,2-bis(ethenyl)benzene

1,2-bis(ethenyl)benzene is an organic aromatic compound with the molecular formula C10H10 and CAS number 1321-74-0. Also known as divinylbenzene, it belongs to the family of vinyl aromatic monomers. This compound features a benzene ring substituted with two vinyl groups (ethenyl groups) in the 1,2-positions (ortho configuration). With a molecular weight of 130.19 g/mol, it serves as an important chemical intermediate and crosslinking agent in polymer chemistry and industrial applications.

1,2-bis(ethenyl)benzene is typically a colorless to pale yellow liquid at room temperature with a characteristic aromatic odor. As an organic compound with dual vinyl functionality, it exhibits moderate volatility and is generally insoluble in water but soluble in organic solvents such as alcohols, ethers, and aromatic hydrocarbons. The presence of both aromatic and vinyl groups gives it intermediate polarity, making it compatible with various organic media while remaining hydrophobic in nature.

1,2-bis(ethenyl)benzene serves primarily as a crosslinking agent in polymer production, particularly for manufacturing ion-exchange resins and specialty polymers. It is widely used in the production of polystyrene-based materials where enhanced mechanical properties and thermal stability are required. Additionally, it finds applications in the synthesis of polymer networks, dental composites, and as a chemical intermediate in various organic synthesis processes requiring bifunctional vinyl reactivity for crosslinking purposes.

1,2-bis(ethenyl)benzene should be handled with standard chemical safety precautions including wearing appropriate personal protective equipment such as safety goggles, chemical-resistant gloves, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to avoid inhalation exposure. Avoid direct skin and eye contact, and prevent ingestion. Keep away from heat sources, sparks, and open flames as the compound may pose fire hazards. Ensure proper grounding when transferring to prevent static electricity buildup.

1,2-bis(ethenyl)benzene should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. Due to its vinyl functionality, it may undergo polymerization reactions, so storage temperatures should be controlled and stabilizers may be required for long-term storage. Keep containers away from oxidizing agents and incompatible materials. Store in areas with appropriate fire protection measures and ensure containers are properly labeled according to regulatory requirements.

In case of skin contact with 1,2-bis(ethenyl)benzene, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean 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 and seek immediate medical attention. In all cases, consult a physician and provide the safety data sheet for proper medical assessment.

1,2-bis(ethenyl)benzene must be disposed of in accordance with local, national, and international waste disposal regulations. It should not be released into the environment or disposed of through regular waste streams. Contact licensed waste disposal companies specializing in chemical waste management for proper treatment and disposal. Small quantities may require special collection procedures, while larger amounts need professional hazardous waste handling. Always consult current waste disposal regulations and maintain proper documentation of disposal activities.

1,2-bis(ethenyl)benzene is classified under ADR Class 4.1 (Flammable solids), Packing Group III for transportation purposes. It must be packaged in approved containers according to ADR regulations and properly labeled with appropriate hazard markings. During transport, ensure packages are secured to prevent damage and leakage. Transportation should comply with all applicable ADR/RID regulations for road and rail transport within Europe. Proper shipping documentation must accompany all shipments, including transport emergency cards.

1,2-bis(ethenyl)benzene is subject to standard chemical regulations including REACH registration requirements for manufacture, import, and use within the European Union. It is not classified as a Substance of Very High Concern (SVHC) under REACH. Users must comply with CLP regulation requirements for classification, labeling, and packaging. Standard occupational safety regulations apply for workplace exposure limits and safety measures. Companies handling this substance should maintain appropriate safety data sheets and ensure compliance with relevant industrial chemical management requirements.

1,2-bis(ethenyl)benzene is available through OYSI, a professional European distributor of specialty chemicals serving industrial and research customers across Europe. OYSI provides quality chemical products with proper documentation, safety data sheets, and regulatory compliance support. As a specialized chemical distributor, OYSI can supply various grades and quantities to meet specific industrial requirements. Contact OYSI directly for availability, technical specifications, pricing information, and delivery options to your location within Europe.