3012-50-8

Usage

General Description

1-(2-Benzothiazolylazo)-2-naphthol is a chemical compound commonly used as a pH indicator and in analytical chemistry. It is a synthetic azo dye that appears as a red-brown powder and is soluble in organic solvents. 1-(2-benzothiazolylazo)-2-naphthol is often used in the determination of metal ions, such as zinc, copper, and nickel, due to its ability to form stable complexes with these metals. As a pH indicator, it changes color in acidic and basic solutions, making it useful in titrations and other chemical analyses. Additionally, it has been studied for its potential applications in the development of new materials, such as organic light-emitting diodes and dye-sensitized solar cells.

InChI:InChI=1/C17H11N3OS/c21-14-10-9-11-5-1-2-6-12(11)16(14)19-20-17-18-13-7-3-4-8-15(13)22-17/h1-10H,(H,18,20)/b19-16+

Upstream product

• 136-95-8 2-amino-benzthiazole 
• 135-19-3 β-naphthol 

Downstream Products

• 1638770-39-4 benzo[4,5]thiazolo[2,3-c]naphtho[2,1-e][1,2,4]triazin-12-ium tosylate 

Relevant academic research and scientific papers

Formation of azolo [1,2,4]triazinium salts by reaction of heterocyclic-substituted 1-azo-naphthalen-2-ols with strong acids

By reaction of heterocyclic-substituted 1-azo-naphth-2-ols with the Vilsmeier reagent or with strong acids polycyclic azolo[1,2,4]triazinium salts are formed in good yields. The azolo[1,2,4] triazinium salts exhibit similar UV/Vis absorption properties as the starting azo compounds, but in contrast to those the fluorescence appears in the visible range.

Spectrophotometric investigations of the role of the organic solvent on the acid dissociation constants of some azo dyes derived from 2-aminobenzothiazole

Proton dissociation constants (pKa) of a set of hydroxyl azo dyes in various organic solvent + water mixtures have been determined. The results obtained were discussed in terms of the solvent characteristic. Effects of hydrogen-bonding interactions and solvent basicity on the ionization process have been also discussed. In a nutshell, the pKa values of the investigated compounds were found to be largely depending on both the ratio and the nature of organic cosolvent. In addition, it was very important to know with which structures we are dealing in liquid solutions and how these structures influence physicochemical properties of individual tautomers and their acidity constants. Thus, theoretical calculations have been done in order to obtain an insight into structure features and physicochemical properties of the compounds under study.