2569-57-5 Usage
Description
1-(2-Pyridinylazo)benzene, also known as PAB, is a chemical compound belonging to the class of azo compounds. It is characterized by its bright yellow color and is primarily used as a reagent for the spectrophotometric determination of various metals such as copper, cadmium, and nickel. PAB forms colored complexes with metal ions, enabling their quantitative analysis in solutions. It is widely utilized in industrial and laboratory settings for the analysis of metal ions. However, it is essential to handle this chemical with care due to its potential harmful effects if ingested, inhaled, or upon skin and eye contact.
Uses
Used in Chemical Analysis Industry:
1-(2-Pyridinylazo)benzene is used as a reagent for the spectrophotometric determination of metal ions such as copper, cadmium, and nickel. It serves as a valuable tool for the quantitative analysis of these metal ions in various solutions, allowing for accurate and efficient measurements.
Used in Industrial and Laboratory Settings:
1-(2-Pyridinylazo)benzene is employed as a versatile and valuable tool for the determination of metal ions in different applications. Its ability to form colored complexes with metal ions makes it an essential component in the analysis and detection of these elements in various samples, contributing to the overall efficiency and accuracy of the process.
Check Digit Verification of cas no
The CAS Registry Mumber 2569-57-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,6 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2569-57:
(6*2)+(5*5)+(4*6)+(3*9)+(2*5)+(1*7)=105
105 % 10 = 5
So 2569-57-5 is a valid CAS Registry Number.
2569-57-5Relevant articles and documents
Hydrogen peroxide based oxidation of hydrazines using HBr catalyst
Du, Wanting,Ma, Zichao,Shao, Liming,Wang, Jian
, (2021/11/18)
Azo compounds (RN = NR′) are an important class of organic molecules that find wide application in organic synthesis. Herein, we report an efficient, practical and metal-free oxidation of hydrazines (RNH-NHR’) to azo compounds using 5 mol% HBr and hydrogen peroxide as terminal oxidant. This new method has been demonstrated by 40 examples with excellent yields. In addition, we showcased two examples of the one-pot sequential reactions involving our hydrazine oxidation/hydrolysis/Heck reaction or Cu-catalyzed N-arylation with aryl boronic acid. The distinct advantages of this protocol include metal-free catalysis, waste prevention, and easy operation.
PREPARATION OF AZO COMPOUNDS WITH SOLID CATALYSTS
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Page/Page column 7, (2011/06/23)
The present invention refers to a procedure for preparing azo compounds comprising a reaction between at least: one amine or polyamine, molecular oxygen, a catalyst comprising at least one support selected from at least a metal oxide of one of the elements of the groups 3, 4, 5, 6, 8, 9, 11 and 13, silica, an anionic laminar compound of hydrotalcite type or its derivatives, active carbon or an organic polymer. In addition, said catalyst may contain nanoparticles of gold.
