Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate(CAS: 548-80-1)

Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate is a crystalline compound with a molecular weight of approximately 517.12 g/mol. It has a high solubility in water and a low solubility in organic solvents. The compound is known for its stability in acidic and neutral environments but is reactive towards strong bases. It can form complexes with metal ions and exhibits color changes upon dilution.

Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate is typically synthesized through a multi-step process involving diazotization, condensation with naphthalene, and sulfonation. The synthesis involves the use of sodium nitrite as a diazotizing agent and sulfuric acid as a sulfonating agent. The reaction is selective and yields a high percentage of the desired product, making it suitable for industrial scale production.

Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate is used in various industries. It is a key component in the production of dyes and pigments, particularly in the textile and paper industries. Additionally, it finds applications in the pharmaceutical sector for the synthesis of intermediates and as a coloring agent in pharmaceutical formulations. It is also used in the electronic industry as a dopant material in semiconductors and as a component in sensors and optical devices.

When handling Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate, it is essential to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. The compound should be stored in a closed container to prevent moisture absorption. Laboratory procedures should be conducted in a well-ventilated area or a fume hood to minimize inhalation risks. In case of a spill, it is important to follow the safety data sheet (SDS) guidelines for proper cleanup and disposal. This compound is not flammable but requires caution due to its reactivity with strong bases.