67332-81-4

Basic information

• Product Name: 2-hydroxy-5-(2-hydroxy-phenylazo)-benzoic acid
• CAS NO: 67332-81-4
• Molecular Weight: 258.233
• Mol File: 67332-81-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-hydroxy-5-(2-hydroxy-phenylazo)-benzoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2-hydroxy-5-(2-hydroxy-phenylazo)-benzoic acid(67332-81-4)
• EPA Substance Registry System: 2-hydroxy-5-(2-hydroxy-phenylazo)-benzoic acid(67332-81-4)

Safety Data

• Hazardous Substances Data: 67332-81-4(Hazardous Substances Data)

Upstream product

• 48103-02-2 2-Hydroxy-benzoldiazonium 
• 69-72-7 salicylic acid 

Relevant articles and documents

RELATION BETWEEN MOLECULAR STRUCTURE AND SPECTRAL CHARACTERISTICS OF SOME CHELATING MONO-AZO DYES BASED ON o-HYDROXY ARYL ALDEHYDES AND CARBOXYLIC ACIDS

The electronic spectra of some chelating mono-azo compounds have been studied in some organic solvents of varying polarities.The u.v. bands in ethanol and cyclohexane are assigned in the light of electronic transitions.The effect of microscopic and macroscopic solvent polarity parameters are also discussed.The i.r. spectra of the solid compounds as KBr discs as well as the 1H NMR spectra have also been assigned and discussed in relation to molecular structure.The azo ->/- hydrazone tautomerism in some of these compounds is assured.The study indicated that the colour of the materials depends on the polarity and the formation of intermolecular H-bonds with the solvent molecules.