5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid(CAS: 119-70-0)

5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid, also known as disulfanilic acid, is an organic compound with the CAS number 119-70-0. It is a solid with a molecular weight of approximately 274.27 g/mol and a pKa of about 9.25. This compound is characterized by its basic nature and has a melting point of around 240-242°C.

5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid is widely used as a chemical intermediate in the production of dyes and pharmaceuticals. It also serves as a reagent in research applications, particularly in the synthesis of other compounds and as an analytical reagent.

5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid is generally safe when handled with proper precautions. However, it can cause skin and eye irritation. It is important to wear appropriate personal protective equipment such as gloves and safety goggles when handling the compound. Ensure adequate ventilation and avoid inhalation of dust and fumes.

5-Amino-2-[(4-aminophenyl)amino]benzenesulfonic acid should be stored in tightly sealed containers in a cool, dry place, away from direct sunlight and heat sources. It should be kept at a temperature not exceeding 25°C and should be protected from moisture and humidity to prevent degradation. Optimal storage conditions will help maintain the compound's stability and purity.