4-methoxyaniline

4-methoxyaniline is an aromatic amine compound with the molecular formula C7H9NO and CAS number 104-94-9. It belongs to the aniline family, characterized by an amino group attached to a benzene ring with a methoxy substituent in the para position. With a molecular weight of 123.15 g/mol, this organic compound is classified as highly toxic and poses significant health and environmental risks, requiring careful handling and storage procedures.

4-methoxyaniline is typically a solid crystalline compound at room temperature, appearing as pale yellow to brown crystals or powder. It has a characteristic amine-like odor and is moderately soluble in water, with better solubility in organic solvents such as ethanol and ether. The compound is sensitive to light and air, which can cause oxidation and discoloration over time, requiring proper storage conditions to maintain its stability.

4-methoxyaniline is primarily used as an intermediate in the synthesis of dyes, pharmaceuticals, and other organic compounds. It serves as a building block in the production of azo dyes, hair dyes, and various pharmaceutical intermediates. The compound is also utilized in research and development applications, particularly in organic synthesis laboratories. Its aromatic amine structure makes it valuable for creating more complex molecular structures through various chemical reactions.

4-methoxyaniline requires strict safety measures due to its high toxicity classification. Personal protective equipment must include chemical-resistant gloves, safety goggles, and respiratory protection when handling powder forms. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid skin contact and ingestion at all costs, as the compound can cause severe poisoning. Emergency eyewash stations and safety showers should be readily accessible.

4-methoxyaniline should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. The storage area must be secure and restricted to authorized personnel only due to the compound's high toxicity. Keep away from oxidizing agents, acids, and incompatible materials. Storage temperatures should remain below 25°C, and containers should be clearly labeled with appropriate hazard warnings and handling instructions.

Immediate action is critical due to 4-methoxyaniline's high toxicity. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes. If inhaled, move to fresh air immediately. For ingestion, do not induce vomiting and seek immediate medical attention. Always contact emergency medical services and provide the safety data sheet to healthcare professionals.

4-methoxyaniline disposal must comply with local and international hazardous waste regulations due to its toxic and environmentally harmful properties. The compound cannot be disposed of in regular waste streams or sewers. It requires collection by licensed hazardous waste disposal companies for proper treatment, typically involving high-temperature incineration at authorized facilities. All containers and contaminated materials must also be treated as hazardous waste and disposed of accordingly.

4-methoxyaniline is classified under ADR Class 6.1 (Toxic substances), Packing Group III for transportation purposes. It requires appropriate packaging meeting UN specification standards, proper labeling with toxic substance markings, and accompanying transport documentation. Vehicles must carry appropriate emergency equipment and drivers need hazardous materials transportation certification. The compound must be secured to prevent spillage and separated from incompatible materials during transport.

4-methoxyaniline is subject to comprehensive chemical regulations including REACH registration requirements in Europe and CLP classification for hazard communication. Its classification as Acute Tox. 1 and 2, STOT RE 2, and Aquatic Acute 1 triggers specific labeling, safety data sheet, and handling requirements. While not currently listed as a SVHC substance, it requires careful regulatory compliance including proper notification procedures and adherence to occupational exposure limits where established.

4-methoxyaniline is available through OYSI, a professional European distributor of technical chemicals. As a specialized chemical requiring expert handling and regulatory compliance, it should only be purchased from qualified suppliers who can provide proper documentation, safety data sheets, and technical support. OYSI ensures full regulatory compliance and provides the necessary expertise for safe handling and application guidance for professional users across European markets.