2-amino-5-(4-aminophenyl)benzenesulfonic acid

2-amino-5-(4-aminophenyl)benzenesulfonic acid is an aromatic organic compound with the molecular formula C12H12N2O3S and CAS number 2051-89-0. This sulfonic acid derivative features two amino groups positioned on a biphenyl structure, giving it distinctive chemical properties. With a molecular weight of 264.3 g/mol, it belongs to the class of substituted benzenesulfonic acids and serves as an important intermediate in various chemical synthesis processes.

2-amino-5-(4-aminophenyl)benzenesulfonic acid typically appears as a crystalline solid at room temperature due to its aromatic structure and sulfonic acid functionality. The presence of amino groups and the sulfonic acid moiety generally confers good water solubility, while the compound may show limited solubility in non-polar organic solvents. Its molecular weight of 264.3 g/mol and polar functional groups influence its physical behavior and handling characteristics.

2-amino-5-(4-aminophenyl)benzenesulfonic acid serves primarily as a chemical intermediate in the synthesis of dyes, pigments, and pharmaceutical compounds. Its dual amino functionality makes it valuable in condensation reactions and as a building block for more complex aromatic structures. The compound finds applications in the production of specialty chemicals, research and development activities, and as a precursor in organic synthesis processes requiring substituted aromatic sulfonic acids.

2-amino-5-(4-aminophenyl)benzenesulfonic acid should be handled using standard laboratory safety practices including wearing appropriate personal protective equipment such as safety glasses, gloves, and protective clothing. Work in well-ventilated areas or under fume hoods to avoid inhalation of dust or particles. Prevent contact with skin and eyes, and avoid generating airborne particles during handling. Wash hands thoroughly after use and ensure proper hygiene measures are followed.

2-amino-5-(4-aminophenyl)benzenesulfonic acid should be stored in a cool, dry place away from direct sunlight and moisture to prevent degradation. Keep containers tightly closed in original packaging to maintain product integrity. Store separately from strong oxidizing agents, strong bases, and incompatible materials. Ensure storage areas are well-ventilated and maintain appropriate temperature conditions to preserve the compound's stability and quality over time.

In case of skin contact with 2-amino-5-(4-aminophenyl)benzenesulfonic acid, immediately wash the affected area with plenty of water and mild soap 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 to fresh air immediately. Remove contaminated clothing and wash before reuse. Always consult safety data sheets for specific guidance and seek medical advice if irritation persists.

2-amino-5-(4-aminophenyl)benzenesulfonic acid must be disposed of in accordance with local, national, and international environmental regulations. Contact licensed waste disposal companies for proper handling and treatment of chemical waste. Do not discharge into drains, soil, or water bodies. Collect waste in appropriate containers, properly labeled for hazardous chemical disposal. Consult local authorities and waste management specialists to ensure compliance with applicable environmental protection laws.

2-amino-5-(4-aminophenyl)benzenesulfonic acid is classified under ADR Class 8, Packing Group III for transportation purposes. This classification indicates it is considered a corrosive substance requiring appropriate packaging and handling during transport. Use UN-approved packaging materials and ensure proper labeling according to dangerous goods regulations. Transport vehicles must comply with ADR requirements, and drivers should have appropriate training for handling Class 8 materials.

2-amino-5-(4-aminophenyl)benzenesulfonic acid is subject to standard chemical regulations including REACH registration requirements in Europe. The substance is not currently listed as a Substance of Very High Concern (SVHC) under REACH. However, it must comply with CLP regulation for classification, labeling, and packaging. Users should maintain safety data sheets, follow good chemical hygiene practices, and ensure compliance with local occupational health and safety regulations.

2-amino-5-(4-aminophenyl)benzenesulfonic acid is available through OYSI, a leading European distributor of specialty chemicals and laboratory reagents. OYSI provides reliable supply chains across Europe with proper documentation and regulatory compliance. For procurement, contact OYSI directly to discuss quantities, specifications, delivery requirements, and technical support. Their experienced team can provide guidance on handling, applications, and regulatory aspects of this chemical compound.