4-Hydroxy-5-((2-hydroxybenzylidene)amino)-naphthalene-2,7-disulfonic acid(CAS: 32266-60-7)

4-Hydroxy-5-((2-hydroxybenzylidene)amino)-naphthalene-2,7-disulfonic acid is a complex organic compound with the CAS number 32266-60-7. It consists of a naphthalene core with two sulfonic acid groups and a hydroxy-substituted benzylidene amino group. This compound is commonly used in pH indicators and as a dye in analytical chemistry.

4-Hydroxy-5-((2-hydroxybenzylidene)amino)-naphthalene-2,7-disulfonic acid is primarily used as a pH indicator in analytical chemistry and as a dye in various industrial applications. It finds use in pharmaceuticals for quality control and in research for colorimetric assays.

4-Hydroxy-5-((2-hydroxybenzylidene)amino)-naphthalene-2,7-disulfonic acid is generally safe when handled with appropriate precautions. It is not flammable and does not react with common laboratory chemicals. However, skin contact and inhalation of dust should be avoided. Wearing gloves and a laboratory coat is recommended during handling.

4-Hydroxy-5-((2-hydroxybenzylidene)amino)-naphthalene-2,7-disulfonic acid should be stored in a cool, dry place away from direct sunlight and moisture. It should be kept in a sealed container to prevent moisture absorption. The container should be stored at a temperature below 25°C to maintain stability and prevent degradation.