Compound Q&A
How is Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate (CAS: 548-80-1) typically synthesized?
Answer
![Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate](https://static.chemtradehub.com/structs/548/548-80-1-0a78.webp "Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate")
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.
About
CAS No
548-80-1
English Name
Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate
Molecular Formula
C16H9N3Na2O10S2
Molecular Weight
469.41 g/mol
SMILES
C1=CC(=CC=C1N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)[N+](=O)[O-].[Na+].[Na+]
InChIKey
AXUUHWJXDWBCSG-QIKYXUGXSA-L
Last Updated: 2025-10-26 09:39
![Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate — Shenyang Huaxi Biotechnology Co., Ltd.](https://static.chemtradehub.com/suppliers/67ce381b57537e5c8069b53e/67ce381b57537e5c8069b53e-logo.webp){kind=logo}
![Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate — Shanghai Jixiang Biotechnology Co., Ltd.](https://static.chemtradehub.com/suppliers/67ce6f4d2b2de6e8e95a45bf/67ce6f4d2b2de6e8e95a45bf-logo.webp){kind=logo}
![Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate — ShangHaiJiZhiShengHua Technology Co Ltd](https://static.chemtradehub.com/suppliers/67cecbee2b2de6e8e95a5b72/67cecbee2b2de6e8e95a5b72-logo.webp){kind=logo}