What are the physical and chemical properties of Disodium 2,2'-[(E)-1,2-ethenediyl]bis{5-[(E)-(4-hydroxyphenyl)diazenyl]benzenesulfonate} (CAS: 3051-11-4)?

Disodium 2,2'-[(E)-1,2-ethenediyl]bis{5-[(E)-(4-hydroxyphenyl)diazenyl]benzenesulfonate} (CAS: 3051-11-4) is a crystalline solid with a molecular weight of approximately 624.2 g/mol. It is slightly soluble in water and organic solvents. The compound exhibits chemical reactivity typical of azo compounds, showing stability under normal conditions but may react under strong acidic or basic conditions. It is a stable compound in the solid state but may decompose upon prolonged exposure to high temperatures or strong oxidizing agents.