93679-75-5

Basic information

• Product Name: Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-, methyl ester
• CAS NO: 93679-75-5
• Molecular Formula: C17H14N2O4S
• Molecular Weight: 342.36900
• Mol File: 93679-75-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-, methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-, methyl ester(93679-75-5)
• EPA Substance Registry System: Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-, methyl ester(93679-75-5)

Safety Data

• Hazardous Substances Data: 93679-75-5(Hazardous Substances Data)

Upstream product

• 186581-53-3 diazomethane 
• 573-89-7 orange II 
• 135-19-3 β-naphthol 
• 421-20-5 Methyl fluorosulfonate 

Relevant articles and documents

The Identification of Azo Dyes. Part 3. Methylation of Sulphonate Groups and Mass Spectrometry

Azo-dyes containing sulphonic acid groups can be extracted from water as tetrabutylammonium salts with methylene chloride, and converted by methyl fluorosulphate to methyl esters.These are sufficiently volatile and stable to give electron-impact mass spectra, in which molecular ions can usually be detected.Fragmentation patterns of authentic dye derivatives have been explored, to the point that identification of known dyes, and of unknown dyes related to known dyes, is usually straightforward, and in many cases the mass spectra of unseparated mixtures of azo dyes can be interpreted with assurance.The applications of dye identification to the dating of textiles and to the recognition of their country of origin, and thus (via assignment of textile to tribe) to the study of tribal migration, are summarised.