4,4'-Diamino-2,2'-biphenyldisulfonic acid(CAS: 117-61-3)

4,4'-Diamino-2,2'-biphenyldisulfonic acid is a chemical compound with the CAS number 117-61-3. It is a dianhydride with a molecular formula of C16H10N2O4S2. This compound possesses aromatic and sulfonic acid properties, making it useful in various applications.

4,4'-Diamino-2,2'-biphenyldisulfonic acid is primarily used in the synthesis of polyimides, which are high-performance polymers used in aerospace, electronics, and coatings. It also finds applications in the production of heat-resistant materials and as a precursor in organic synthesis.

4,4'-Diamino-2,2'-biphenyldisulfonic acid is generally safe when handled properly. However, it may cause skin irritation and should be avoided by direct contact. Protective gloves, goggles, and a lab coat are recommended. It is not considered hazardous to the environment and meets safety standards if handled according to the Material Safety Data Sheet (MSDS).

4,4'-Diamino-2,2'-biphenyldisulfonic acid should be stored in a tightly sealed container at room temperature in a cool, dry place. It should be protected from direct sunlight and moisture. The storage area should be well-ventilated to avoid inhaling the fumes and to prevent any chemical reactions.