CAS 548-80-1: 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt
Description:4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt, commonly known as Disodium 4,5-dihydroxy-3-(4-nitrophenylazo)-2,7-naphthalenedisulfonate, is a synthetic organic compound characterized by its azo dye structure. This compound features a naphthalene backbone with hydroxyl and sulfonic acid functional groups, contributing to its solubility in water and making it useful in various applications, particularly in dyeing and as a pH indicator. The presence of the nitrophenylazo group imparts vivid coloration, which is a hallmark of azo dyes. Its disodium salt form enhances its solubility and stability in aqueous solutions. The compound is typically used in analytical chemistry, particularly in spectrophotometric applications, due to its ability to form colored complexes with metal ions. Additionally, it may have applications in biological studies, as azo compounds can exhibit interesting interactions with biomolecules. Safety data should be consulted, as azo dyes can sometimes be associated with toxicity and environmental concerns.
Formula:C16H11N3O10S2·2Na
InChI:InChI=1S/C16H11N3O10S2.2Na/c20-12-7-11(30(24,25)26)5-8-6-13(31(27,28)29)15(16(21)14(8)12)18-17-9-1-3-10(4-2-9)19(22)23;;/h1-7,20-21H,(H,24,25,26)(H,27,28,29);;
InChI key:InChIKey=GEBWHFRBVHTEBK-UHFFFAOYSA-N
SMILES:[Na].O=N(=O)C1=CC=C(N=NC=2C(O)=C3C(O)=CC(=CC3=CC2S(=O)(=O)O)S(=O)(=O)O)C=C1
- Synonyms:
- 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(p-nitrophenylazo)-, disodium salt
- 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt
- 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[2-(4-nitrophenyl)diazenyl]-, sodium salt (1:2)
- 4,5-Dihydroxy-3-(p-nitrophenylazo)-2,7-naphthalenedisulfonic acid, disodium salt
- 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt
- Acid Red 176
- Chromotrop 2 B
- Chromotrope Red 4B
- Cr-2B
- Disodium 4,5-Dihydroxy-3-(P-Nitrophenylazo)Naphthalene-2,7-Disulphonate
- See more synonyms
- Naphtocard Fast Red 3B
- P-Nitrobenzene-Azochromotropic Acid
- Pcr 2B
- Poly-chromotrope 2B
- disodium (3E)-5-hydroxy-3-[2-(4-nitrophenyl)hydrazinylidene]-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate
- p-Nitrobenzeneazochromotropic acid sodium salt
- Acid Red 176~C.I. 16575
- C.I. Acid Red 176, disodium salt (8CI)
- C.I. Acid Red 176, disodium salt
- C.I. Acid Red 176
- C.I. Acid Red 176 (VAN)
- C.I. 16575
