Aniline

Aniline is an aromatic amine with the chemical formula C6H7N and CAS number 62-53-3. It consists of a benzene ring attached to an amino group (-NH2), making it the simplest aromatic amine. With a molecular weight of 93.13 g/mol, aniline is a fundamental building block in organic chemistry and serves as a precursor for numerous industrial chemicals and dyes.

Aniline is a colorless to pale yellow oily liquid at room temperature with a characteristic fishy or musty odor. It has a boiling point of 184°C and is slightly soluble in water but readily dissolves in organic solvents like ethanol and ether. The compound darkens upon exposure to air and light due to oxidation, and its aromatic amine structure makes it basic in nature.

Aniline is primarily used as an intermediate in the production of polyurethane foams, rubber chemicals, and dyes. It serves as a key raw material for manufacturing methylene diphenyl diisocyanate (MDI), antioxidants, and pharmaceutical intermediates. The chemical industry also utilizes aniline in producing herbicides, synthetic resins, and various aromatic compounds essential for industrial applications.

Aniline requires careful handling due to its toxic nature and multiple hazard classifications including carcinogenicity and mutagenicity. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods, avoiding skin contact and inhalation. Emergency eyewash stations and safety showers must be readily accessible in work areas.

Aniline should be stored in tightly sealed containers in cool, dry, well-ventilated areas away from heat sources, strong oxidizers, and acids. Storage areas must be equipped with appropriate spill containment and ventilation systems. The substance should be protected from light and air exposure to prevent degradation and discoloration. Secondary containment is recommended due to its toxic properties and environmental hazards.

Immediate medical attention is required for any exposure to aniline due to its high toxicity. For skin contact, remove contaminated clothing and wash thoroughly with soap and water. In case of eye contact, flush immediately with water for at least 15 minutes. If inhaled, move to fresh air and seek medical care. For ingestion, do not induce vomiting and contact emergency services immediately.

Aniline must be disposed of as hazardous waste through licensed waste disposal contractors in accordance with local and European regulations. The substance cannot be discharged into sewers or the environment due to its toxicity and environmental impact. Contaminated materials, including packaging and absorbents, require proper hazardous waste classification and disposal through authorized facilities following waste management protocols.

Aniline is classified as ADR Class 6.1 (toxic substances) Packing Group II, requiring specialized dangerous goods packaging and documentation. Transportation must comply with ADR regulations including proper labeling with GHS pictograms (GHS08, GHS06, GHS05, GHS09) and the 'Danger' signal word. Only certified dangerous goods transporters with appropriate vehicle equipment and driver training can handle aniline shipments.

Aniline is subject to strict European regulations under REACH and CLP due to its classification as carcinogenic (Category 2), mutagenic (Category 2), and toxic. While not currently listed as a Substance of Very High Concern (SVHC), it requires safety data sheets, hazard communication, and compliance with occupational exposure limits. Industrial users must implement risk management measures and report usage under REACH requirements.

OYSI serves as a reliable European distributor for aniline, providing quality chemical products to industrial customers across Europe. As a specialized chemical distributor, OYSI ensures proper packaging, documentation, and regulatory compliance for aniline shipments. Contact OYSI directly for availability, technical specifications, and delivery options tailored to your specific industrial requirements and location within Europe.