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CAS 2497-38-3

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4-[(4-Hydroxyphenyl)azo]benzoic acid

Description:
4-[(4-Hydroxyphenyl)azo]benzoic acid, also known as Acid Orange 7, is an organic compound characterized by its azo dye structure, which features an azo group (-N=N-) linking two aromatic rings. This compound is typically a red to orange powder and is soluble in water, making it useful in various applications, particularly in dyeing textiles and as a pH indicator. The presence of the hydroxy group enhances its solubility and reactivity, while the carboxylic acid group contributes to its acidic properties. It exhibits good lightfastness and stability under various conditions, which is advantageous for its use in dye formulations. Additionally, this compound can participate in various chemical reactions, including coupling reactions, due to its functional groups. However, like many azo dyes, it may pose environmental and health concerns, necessitating careful handling and disposal. Overall, 4-[(4-Hydroxyphenyl)azo]benzoic acid is a significant compound in the field of synthetic dyes and organic chemistry.
Formula:C13H10N2O3
InChI:InChI=1S/C13H10N2O3/c16-12-7-5-11(6-8-12)15-14-10-3-1-9(2-4-10)13(17)18/h1-8,16H,(H,17,18)
InChI key:InChIKey=HLVCZTOFOWHIJZ-UHFFFAOYSA-N
SMILES:N(=NC1=CC=C(O)C=C1)C2=CC=C(C(O)=O)C=C2
Synonyms:
  • p-(p-Hydroxyphenylazo)benzoic acid
  • 4-[2-(4-Hydroxyphenyl)diazenyl]benzoic acid
  • Benzoic acid, 4-[2-(4-hydroxyphenyl)diazenyl]-
  • Benzoic acid, 4-[(4-hydroxyphenyl)azo]-
  • Benzoic acid, p-[(p-hydroxyphenyl)azo]-
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