CAS 1571-36-4: Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-[2-(3,4-dihydroxyphenyl)diazenyl]-, ammonium salt (1:2)

Description: Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-[2-(3,4-dihydroxyphenyl)diazenyl]-, ammonium salt (1:2), commonly referred to by its CAS number 1571-36-4, is a complex organic compound characterized by its azo dye structure. This substance features a sulfonic acid group, which enhances its solubility in water, making it suitable for various applications in dyeing and as a pH indicator. The presence of the azo group (-N=N-) contributes to its vivid coloration, which is a hallmark of azo dyes, while the dihydroxyphenyl substituents provide additional reactivity and potential for further chemical modifications. The ammonium salt form indicates that it exists as a cationic species in solution, which can influence its interaction with other molecules and surfaces. This compound is often utilized in the textile industry, as well as in biological and chemical research, due to its ability to form stable complexes and its vibrant color properties. Safety and handling precautions are essential, as with many azo compounds, due to potential toxicity and environmental concerns.

Formula: C₂₆H₂₀N₄O₁₀S₂·2H₃N

InChI: InChI=1S/C26H20N4O10S2.2H3N/c31-21-9-7-17(11-23(21)33)27-29-19-5-3-15(25(13-19)41(35,36)37)1-2-16-4-6-20(14-26(16)42(38,39)40)30-28-18-8-10-22(32)24(34)12-18;;/h1-14,31-34H,(H,35,36,37)(H,38,39,40);2*1H3

InChI key: InChIKey=BTVLOQLIWTZBDD-UHFFFAOYSA-N

SMILES: O=S(=O)(O)C1=CC(N=NC2=CC=C(O)C(O)=C2)=CC=C1C=CC3=CC=C(N=NC4=CC=C(O)C(O)=C4)C=C3S(=O)(=O)O.N

Synonyms:

• 2,2'-(E)-ethene-1,2-diylbis{5-[2-(3,4-dioxocyclohexa-1,5-dien-1-yl)hydrazino]benzenesulfonic acid}
• 2,2′-Stilbenedisulfonic acid, 4,4′-bis[(3,4-dihydroxyphenyl)azo]-, diammonium salt
• Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-[(3,4-dihydroxyphenyl)azo]-, diammonium salt
• Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-[2-(3,4-dihydroxyphenyl)diazenyl]-, ammonium salt (1:2)
• Stilbazo R
• Stilbazo

Stilbazo [Spectrophotometric reagent for Al and other metals]

CAS: 1571-36-4

• Formula: C₂₆H₂₆N₆O₁₀S₂
• Color and Shape: Red to Dark blue to Black powder to crystal
• Molecular weight: 646.65

Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[2-(3,4-dihydroxyphenyl)diazenyl]-, ammonium salt (1:2)

CAS: 1571-36-4

• Formula: C₂₆H₂₆N₆O₁₀S₂
• Color and Shape: Solid
• Molecular weight: 646.6488

Stilbazo

CAS: 1571-36-4

Stilbazo is a pharmaceutical preparation consisting of a polymer film that contains sodium sulfide and …

• Formula: C₂₆H₂₆N₆O₁₀S₂
• Color and Shape: Powder
• Molecular weight: 646.65 g/mol