121199-72-2

Basic information

• Product Name: 4-[2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]benzoic acid
• CAS NO: 121199-72-2
• Molecular Weight: 292.294
• Mol File: 121199-72-2.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: 4-[2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]benzoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4-[2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]benzoic acid(121199-72-2)
• EPA Substance Registry System: 4-[2-(2-hydroxynaphthalen-1-yl)diazen-1-yl]benzoic acid(121199-72-2)

Safety Data

• Hazardous Substances Data: 121199-72-2(Hazardous Substances Data)

Upstream product

• 135-19-3 β-naphthol 
• 309287-40-9 1-(4-carboxyphenyl)-3,3-(1,4-butanediyl)-triazene 
• 150-13-0 4-amino-benzoic acid 

Relevant articles and documents

Convenient and rapid diazotization and diazo coupling reaction via aryl diazonium nanomagnetic sulfate under solvent-free conditions at room temperature

For the first time, nanomagnetic-supported sulfonic acid is used for conversion of several types of aromatic amine, containing electron-withdrawing groups as well as electron-donating groups to the corresponding azo dyes in excellent yield. The synthesis of these compounds is described by the sequential diazotization-diazo coupling of various aromatic amines with sodium nitrite, nanomagnetic supported sulfonic acid and coupling agents under solvent-free conditions at room temperature. This new method offers several advantages including short reaction time, mild reaction conditions, avoidance of harmful acids, and simple work-up procedure. More importantly, aryldiazonium salts supported on magnetic nanoparticles (aryl diazonium nanomagnetic sulfate) were sufficiently stable to be kept at room temperature in the dry state.

Synthesis of dyes from aromatic C-nitroso-N-hydroxytriazenes

Aromatic C-nitroso-N-hydroxytriazenes can be used as stable forms of diazo compounds for preparation of azo dyes.

An environmentally friendly approach to the green synthesis of azo dyes with aryltriazenes via ionic liquid promoted C-N bonds formation

An efficient and green approach for the synthesis of azo dyes has been developed via the Br?nsted acidic ionic liquid (IL) promoted diazo coupling reaction of naphthols with aryltriazenes. The reaction was carried out with the aryltriazenes as diazotizing