85-85-8

Usage

Uses

Used in Analytical Chemistry:
1-(2-Pyridylazo)-2-naphthol is used as an indicator for the complexometric titration of transition metals, such as copper, iron, and zinc. It forms colored complexes with these metals, allowing for their detection and quantification through visual observation or spectrophotometry.
Used in Environmental Science:
1-(2-Pyridylazo)-2-naphthol is used as a reagent for the extraction and spectrophotometric determination of trace amounts of transition metals in environmental samples, such as water, soil, and air. This helps in assessing the presence and concentration of potentially harmful metal contaminants.
Used in Pharmaceutical Industry:
1-(2-Pyridylazo)-2-naphthol is used as a reagent in the development and analysis of metal-based pharmaceutical compounds, aiding in the detection and quantification of metal ions in drug formulations.
Used in Research and Development:
1-(2-Pyridylazo)-2-naphthol is employed as a research tool in the synthesis and study of metal complexes, providing insights into their properties, stability, and potential applications in various fields, including catalysis, materials science, and medicine.

Purification Methods

Purify PAN by repeated crystallisation from EtOH or MeOH. It can also be purified by sublimation under vacuum. Purity can be checked by TLC using a mixed solvent (pet ether/Et2O/EtOH; 10:10:1) on a silica gel plate. It has pK1 1.9 and pK2 12.2 in 20% aqueous ethoxyethanol. It chelates with copper [Pease & Williams Anal Chem 31 1046 1959]. [Beilstein 22 I 694, 22 III/IV 7073, 22/4 V 618.]

InChI:InChI=1/C15H11N3O/c19-13-9-8-11-5-1-2-6-12(11)15(13)18-17-14-7-3-4-10-16-14/h1-10,19H

Upstream product

• 41122-56-9 sodium pyridine-2-diazotate 
• 135-19-3 β-naphthol 

Downstream Products

• 1072009-74-5 [Ru(PPh₃)2(1-(2'-pyridylazo)-2-naphtol^(1-))Cl] 
• 1219807-49-4 trans-chlorobis(triphenylphosphane)(1-(2'-pyridylazo)-2-naphtholato)rhodium(III) hexafluorophosphate 
• 1198-27-2 1-aminonaphthalene-2-ol hydrochloride 
• 23299-85-6 Cu(1-(2-pyridylazo)-2-naphthol)2 
• 65149-44-2 8,8-diphenyl-8λ⁵-naphtho[1'',2'':4',5'][1,3,2]oxazaphospholo[3',2':2,3][1,2,4,3]triazaphospholo[4,5-a]pyridine 
• 65149-46-4 8,8-diphenoxy-8λ⁵-naphtho[1'',2'':4',5'][1,3,2]oxazaphospholo[3',2':2,3][1,2,4,3]triazaphospholo[4,5-a]pyridine 

Relevant academic research and scientific papers

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