3-methylaniline

3-methylaniline is an aromatic amine compound with the molecular formula C7H9N and CAS number 108-44-1. It consists of an aniline molecule with a methyl group attached to the third carbon position of the benzene ring. This organic compound has a molecular weight of 107.15 g/mol and belongs to the class of substituted anilines, which are important intermediates in chemical synthesis and industrial applications.

3-methylaniline is typically a liquid at room temperature with a characteristic aromatic amine odor. As an aromatic amine, it exhibits moderate solubility in water and good solubility in organic solvents such as ethanol, ether, and benzene. The compound tends to darken upon exposure to air and light due to oxidation. Its boiling point is around 203°C, and it has a density slightly higher than water.

3-methylaniline serves as an important intermediate in the synthesis of dyes, pigments, and pharmaceuticals. It is commonly used in the production of azo dyes, particularly those requiring meta-substituted aniline derivatives. The compound also finds applications in the manufacture of pesticides, rubber chemicals, and various organic synthesis processes where aromatic amines are required as building blocks for more complex molecular structures.

3-methylaniline requires careful handling due to its Acute Tox. 3 classification and potential for organ damage. Always wear appropriate personal protective equipment including nitrile gloves, safety goggles, and respiratory protection when handling. Work in well-ventilated areas or under fume hoods to avoid inhalation. Prevent skin and eye contact, as the substance can be absorbed through skin and cause systemic toxicity.

3-methylaniline should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, oxidizing agents, and strong acids. Keep containers away from direct sunlight to prevent degradation and discoloration. Store separately from incompatible materials and ensure proper labeling with hazard information. Maintain storage temperatures below 25°C and check containers regularly for signs of deterioration or leakage.

Immediate action is required upon contact with 3-methylaniline due to its 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, rinse immediately with plenty of clean water for 15 minutes. If inhaled, move to fresh air immediately. Seek medical attention promptly for any exposure, especially if symptoms develop.

3-methylaniline must be disposed of as hazardous waste according to local and EU regulations due to its toxicity and environmental hazard classification. Contact licensed waste disposal companies specializing in chemical waste treatment. Never dispose of in regular waste streams, sewers, or water bodies. Small quantities should be collected in appropriate containers and labeled for professional disposal. Follow all applicable waste codes and documentation requirements.

3-methylaniline is classified as ADR Class 6.1 (toxic substances), Packing Group II, requiring specific transport regulations. It must be packaged in UN-approved containers with proper hazard labels and documentation. Transport vehicles need appropriate placarding and drivers require ADR certification. The substance requires careful handling during loading and unloading, with emergency response information readily available throughout transport.

3-methylaniline is subject to various European regulations including REACH registration requirements and CLP classification as a hazardous substance. While not currently listed as an SVHC (Substance of Very High Concern), it requires safety data sheets and proper hazard communication. Users must comply with occupational exposure limits, environmental discharge restrictions, and industrial emissions regulations where applicable.

3-methylaniline is available through OYSI, a specialized European distributor of chemical products. As an established chemical supplier, OYSI can provide 3-methylaniline with proper documentation, safety data sheets, and regulatory compliance for European markets. Contact OYSI directly for availability, specifications, and technical support to ensure you receive the appropriate grade and packaging for your specific industrial or research applications.