2-isocyanatoethylbenzene

2-isocyanatoethylbenzene is an organic chemical compound with the molecular formula C9H9NO and CAS number 1943-82-4. This aromatic isocyanate features a benzene ring connected to an ethyl chain terminated by an isocyanate functional group (-NCO). With a molecular weight of 147.17 g/mol, it belongs to the isocyanate family of compounds, which are highly reactive chemicals commonly used in polymer synthesis and industrial applications.

2-isocyanatoethylbenzene is typically a liquid at room temperature with characteristic properties of aromatic isocyanates. The compound contains a reactive isocyanate group that makes it highly susceptible to hydrolysis in the presence of moisture, forming corresponding amines and carbon dioxide. Like most isocyanates, it likely has a sharp, pungent odor and should be handled under anhydrous conditions to prevent unwanted reactions with atmospheric moisture.

2-isocyanatoethylbenzene serves as a building block in polymer chemistry and organic synthesis applications. The reactive isocyanate group makes it suitable for producing polyurethanes, coatings, adhesives, and specialty polymers. It can be used in research and development for creating modified polyurethane materials with specific properties, or as an intermediate in the synthesis of pharmaceuticals and agrochemicals where the aromatic ethyl isocyanate structure is required.

2-isocyanatoethylbenzene requires strict safety protocols due to its corrosive and sensitizing properties. Essential PPE includes chemical-resistant gloves, safety goggles, face shield, and respiratory protection to prevent inhalation exposure. Work must be conducted in well-ventilated areas or under fume hoods. Avoid skin and eye contact completely, as the compound is classified as Skin Corr. 1A and can cause severe burns. Emergency eyewash stations and safety showers should be readily accessible.

2-isocyanatoethylbenzene must be stored in tightly sealed, moisture-proof containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep away from water, alcohols, amines, and strong bases which react vigorously with isocyanates. Storage areas should be equipped with appropriate spill containment and fire suppression systems. The container should be clearly labeled with hazard warnings and stored in secondary containment to prevent environmental release.

Immediate decontamination is critical due to the corrosive nature of 2-isocyanatoethylbenzene. For skin contact, immediately remove contaminated clothing and flush affected area with copious amounts of water for at least 15 minutes. For eye contact, rinse immediately with water for at least 15 minutes and remove contact lenses if present. If inhaled, move person to fresh air immediately. Seek immediate medical attention in all cases of exposure, as delayed effects may occur.

2-isocyanatoethylbenzene disposal must comply with local and international hazardous waste regulations due to its corrosive and sensitizing properties. The compound cannot be disposed of in regular waste streams and requires specialized hazardous waste treatment. Contact licensed hazardous waste disposal companies for proper treatment, which typically involves controlled incineration at high temperatures. All containers must be properly labeled and manifested according to regulatory requirements before disposal.

2-isocyanatoethylbenzene is classified as ADR Class 8 (corrosive substances), Packing Group I, indicating high danger level for transportation. Transport requires UN-approved packaging designed for corrosive materials, proper hazard labeling with corrosive placards, and appropriate shipping documentation. Drivers must have ADR certification for dangerous goods transport. The shipment must comply with quantity limitations and routing restrictions established by transportation authorities for Class 8 dangerous goods.

2-isocyanatoethylbenzene falls under multiple regulatory frameworks including REACH registration requirements for substances manufactured or imported above one tonne per year in the EU. The compound must be classified and labeled according to CLP regulation with appropriate hazard statements and safety precautions. While not currently listed as SVHC, its respiratory and skin sensitizing properties may subject it to workplace exposure limits and specialized handling requirements in industrial settings.

2-isocyanatoethylbenzene is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As a professional chemical supplier, OYSI provides proper documentation, safety data sheets, and regulatory compliance support for this controlled substance. Due to the hazardous nature and regulatory requirements of this compound, procurement is typically limited to qualified industrial users with appropriate handling capabilities and safety infrastructure.