1-chloro-4-isocyanatobenzene

1-chloro-4-isocyanatobenzene is an aromatic organic compound with the molecular formula C7H4ClNO and CAS number 104-12-1. This chemical substance features both a chlorine atom and an isocyanate functional group (-NCO) attached to a benzene ring. With a molecular weight of 153.56 g/mol, it belongs to the class of chlorinated aromatic isocyanates and is classified as a highly hazardous chemical requiring special handling precautions due to its toxicity and sensitizing properties.

1-chloro-4-isocyanatobenzene is typically a solid or liquid at room temperature, depending on purity and conditions. As an aromatic isocyanate compound, it generally exhibits limited water solubility due to its hydrophobic benzene ring, though the isocyanate group can react with water. The compound may have a characteristic sharp odor typical of isocyanates. Its physicochemical behavior is influenced by the electron-withdrawing effects of both the chlorine substituent and the isocyanate group on the benzene ring.

1-chloro-4-isocyanatobenzene is primarily used as an intermediate in organic synthesis and chemical manufacturing. It serves as a building block for producing polyurethanes, pharmaceuticals, agrochemicals, and specialty chemicals. The compound's dual functionality (chlorine and isocyanate groups) makes it valuable for creating complex molecular structures through various chemical reactions. It may also be used in research and development applications for synthesizing novel compounds in pharmaceutical and materials science industries.

1-chloro-4-isocyanatobenzene must be handled with extreme caution due to its high toxicity and sensitizing properties. Workers should wear full personal protective equipment including respiratory protection, chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid skin and eye contact completely. Regular health monitoring for workers is recommended due to its respiratory sensitizing potential and acute toxicity classification.

1-chloro-4-isocyanatobenzene should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers away from moisture as isocyanates react with water, forming carbon dioxide and potentially causing pressure buildup. Store separately from bases, alcohols, amines, and oxidizing agents. Ensure storage areas have appropriate fire suppression systems and emergency equipment. Regular container inspection is essential to detect any signs of deterioration or leakage.

In case of skin contact with 1-chloro-4-isocyanatobenzene, immediately remove contaminated clothing and flush the affected area with plenty of water for at least 15 minutes. For eye contact, rinse immediately with clean water for at least 15 minutes and seek medical attention. If inhaled, move the person to fresh air immediately and seek medical help. Do not induce vomiting if swallowed. Seek immediate medical attention for all exposure routes, informing healthcare providers about the specific chemical involved.

1-chloro-4-isocyanatobenzene must be disposed of as hazardous waste according to local, national, and EU regulations. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Never pour down drains, sewers, or into the environment due to its aquatic toxicity. Small quantities may require neutralization or incineration at authorized facilities equipped to handle toxic organic compounds. Maintain proper documentation for waste tracking and ensure compliance with WEEE and other applicable disposal regulations.

1-chloro-4-isocyanatobenzene is classified under ADR Class 6.1 (toxic substances) with Packing Group II, indicating moderate toxicity for transport purposes. Shipments must use appropriate UN-approved packaging and be properly labeled with hazard placards and markings. Drivers require ADR certification for dangerous goods transport. Shipping documents must include proper shipping names, hazard classes, and emergency response information. Ensure vehicles are equipped with appropriate spill response materials and emergency contact information during transport.

1-chloro-4-isocyanatobenzene is subject to various European chemical regulations including REACH and CLP classification requirements. While not currently listed as an SVHC (Substance of Very High Concern), its hazard classification as Acute Tox. 2, respiratory sensitizer, and eye damage category 1 triggers strict handling and notification requirements. Companies must maintain safety data sheets, implement risk management measures, and may need to register the substance under REACH depending on quantities imported or manufactured.

1-chloro-4-isocyanatobenzene is available through OYSI, a European distributor specializing in technical chemicals and laboratory reagents. OYSI provides this compound to qualified industrial customers and research institutions across Europe, ensuring compliance with all relevant safety and regulatory requirements. Due to the hazardous nature of this substance, purchases typically require proper documentation of intended use and adequate safety measures. Contact OYSI directly for availability, specifications, and ordering requirements for this specialized chemical product.