4-(4-aminophenyl)sulfanylaniline

4-(4-aminophenyl)sulfanylaniline is an organic chemical compound with the molecular formula C12H12N2S and CAS number 139-65-1. This aromatic amine features two aminophenyl groups connected by a sulfur bridge, giving it a molecular weight of 216.3 g/mol. It belongs to the class of sulfur-containing aromatic compounds and is classified as a Category 1B carcinogen under CLP regulation, requiring careful handling and strict safety measures.

4-(4-aminophenyl)sulfanylaniline is a solid organic compound at room temperature with a molecular weight of 216.3 g/mol. As an aromatic amine containing sulfur, it typically appears as a crystalline powder. The compound contains two amino groups and a sulfur bridge, making it moderately polar. Its exact melting point, boiling point, and solubility characteristics should be verified from technical data sheets for specific handling requirements.

4-(4-aminophenyl)sulfanylaniline is primarily used as an intermediate in chemical synthesis and manufacturing processes. Its structure makes it valuable in the production of dyes, pigments, and other aromatic compounds. It may also serve as a building block in pharmaceutical research and specialty chemical manufacturing. Due to its carcinogenic classification, its use is restricted to professional and industrial applications with appropriate safety controls.

4-(4-aminophenyl)sulfanylaniline requires strict safety protocols due to its Carc. 1B and Acute Tox. 4 classifications. Use appropriate respiratory protection, chemical-resistant gloves, and protective clothing to prevent skin and inhalation exposure. Work in well-ventilated areas or under fume hoods. Avoid dust generation and ensure proper containment. Regular health monitoring may be required for workers handling this substance due to its carcinogenic properties.

4-(4-aminophenyl)sulfanylaniline should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers protected from light and moisture. Storage areas must be restricted to authorized personnel only due to the carcinogenic nature of the substance. Ensure proper labeling with hazard pictogrammes GHS07, GHS08, and GHS09, and maintain an inventory for regulatory compliance.

Skin contact with 4-(4-aminophenyl)sulfanylaniline requires immediate removal of contaminated clothing and thorough washing with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Seek medical attention promptly in all cases of exposure, informing healthcare providers of the substance's carcinogenic properties and providing the safety data sheet.

4-(4-aminophenyl)sulfanylaniline waste must be disposed of through licensed hazardous waste contractors in accordance with local and European waste regulations. The substance cannot be disposed of in regular waste streams due to its carcinogenic classification and environmental hazard rating (Aquatic Chronic 2). Waste containers must be properly labeled and segregated. Incineration at authorized high-temperature facilities is typically the preferred disposal method for such aromatic compounds.

4-(4-aminophenyl)sulfanylaniline is classified under ADR Class 9 (Miscellaneous dangerous substances), Packing Group III for transportation. Packages must display proper hazard labels and UN identification numbers. Transport documents must include the correct shipping name and hazard information. Drivers require ADR training for Class 9 substances. Ensure packages are properly sealed, labeled with GHS pictogrammes, and accompanied by safety data sheets during transport.

4-(4-aminophenyl)sulfanylaniline is subject to strict European regulations under CLP for classification and labeling as Carc. 1B. REACH registration requirements apply for importers and manufacturers. While not currently listed as SVHC, its carcinogenic classification means it may face future restrictions. Occupational exposure limits and health surveillance requirements apply in workplace settings. Companies must maintain detailed records and implement risk management measures for regulatory compliance.

4-(4-aminophenyl)sulfanylaniline is available through OYSI, a specialized European distributor of technical chemicals. As a carcinogenic substance requiring professional handling, it is only supplied to qualified industrial customers with appropriate safety infrastructure and regulatory compliance. OYSI provides technical support, safety documentation, and ensures proper packaging and transport according to ADR Class 9 requirements for this hazardous chemical intermediate.