4-methylaniline

4-methylaniline is an aromatic amine compound with the chemical formula C7H9N and CAS number 106-49-0. This organic chemical consists of an aniline molecule with a methyl group attached to the para position of the benzene ring. With a molecular weight of 107.15 g/mol, 4-methylaniline serves as an important intermediate in chemical synthesis and manufacturing processes.

4-methylaniline is a crystalline solid at room temperature with a characteristic amine odor. The compound appears as white to pale yellow crystals and has moderate solubility in water while being readily soluble in organic solvents like ethanol and ether. Its melting point is approximately 44-45°C, and it exhibits typical aromatic amine properties including basicity and reactivity.

4-methylaniline serves primarily as an intermediate in the synthesis of dyes, pigments, and pharmaceuticals. The compound is extensively used in the production of azo dyes, particularly those requiring para-substituted aniline derivatives. Additionally, it finds applications in the manufacture of antioxidants, rubber chemicals, and as a building block for various organic synthesis reactions in the chemical industry.

4-methylaniline requires careful handling with appropriate personal protective equipment including 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 contact and ingestion, as aromatic amines can be absorbed through the skin. Ensure emergency eyewash stations and safety showers are readily accessible.

4-methylaniline should be stored in tightly closed containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. Keep the substance away from strong oxidizing agents, acids, and incompatible materials. Storage areas should be equipped with appropriate spill containment measures and maintained at temperatures below 25°C to prevent degradation and ensure product stability.

Skin contact with 4-methylaniline requires immediate removal of contaminated clothing and thorough washing with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move the person to fresh air and seek medical attention. For ingestion, do not induce vomiting and seek immediate medical care.

4-methylaniline disposal must comply with local environmental regulations and waste management guidelines. The substance should not be discharged into drains, sewers, or the environment. Arrange for disposal through licensed hazardous waste contractors who can handle aromatic amine compounds appropriately. Consider recovery or recycling options where feasible before disposal, and maintain proper waste documentation as required by regulations.

4-methylaniline is classified under ADR Class 6.1 (toxic substances) Packing Group II for transportation. The substance requires appropriate hazardous goods packaging, labeling, and documentation when shipped. Transport vehicles must comply with ADR regulations for toxic substances, including proper placarding and driver certification. Ensure shipping containers are properly sealed and labeled with the correct UN identification numbers.

4-methylaniline is regulated under various chemical safety frameworks including REACH registration requirements in the European Union. The substance must comply with CLP regulation for classification, labeling, and packaging. It is not currently listed as a Substance of Very High Concern (SVHC), but users must still follow standard chemical safety protocols and maintain appropriate safety data sheets for workplace safety compliance.

4-methylaniline is available through OYSI, a specialized European distributor of chemical products. OYSI provides reliable supply chains across Europe with proper documentation, quality assurance, and regulatory compliance. As an established chemical distributor, OYSI ensures that all products meet European standards and provides technical support for customers requiring 4-methylaniline for their industrial applications and research needs.