146303-71-1

Basic information

• Product Name: 4-(4-Dimethylamino-phenylazo)-benzenesulfonic acid 4-nitro-phenyl ester
• Synonyms: 4-(4-Dimethylamino-phenylazo)-benzenesulfonic acid 4-nitro-phenyl ester
• CAS NO: 146303-71-1
• Molecular Weight: 426.453
• Mol File: 146303-71-1.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 4-(4-Dimethylamino-phenylazo)-benzenesulfonic acid 4-nitro-phenyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 4-(4-Dimethylamino-phenylazo)-benzenesulfonic acid 4-nitro-phenyl ester(146303-71-1)
• EPA Substance Registry System: 4-(4-Dimethylamino-phenylazo)-benzenesulfonic acid 4-nitro-phenyl ester(146303-71-1)

Safety Data

• Hazardous Substances Data: 146303-71-1(Hazardous Substances Data)

Upstream product

• 100-02-7 4-nitro-phenol 
• 56512-49-3 dabsyl chloride 
• 547-58-0 methyl orange 

Relevant articles and documents

PRODUCTION, PROPERTIES, AND MASS-SPECTROMETRIC INVESTIGATION OF THE DABSYLATES OF PHENOLS

The reaction of monohydric and dihydric phenols and phloroglucinol with 4'-(dimethylamino)azobenzene-4-sulfonyl chloride (dabsyl chloride) leads to the respective mono-, di-, and triabsylates of the phenols.Their structures were confirmed by IR, PMR, and mass spectrometry.A scheme is proposed for the dissociation of the phenol dabsylates under electron impact.The transformation of the phenols into the derivatives by reaction with dabsyl chloride is recommended for highly sensitive and selective determination of the individual phenols by high-performance liquid chromat ography with spectrophotometric detection and for spectrophotometric determination of total phenol content.