Chemical Reagent Bloom Tech Tetrabutylammonium Bromide CAS 1643-19-2

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4-(5-Chloro-2-pyridylazo)-1,3-phenylenediamine we provide is 98% pure substance, Dithizone Indicator Reagent, we achieve it with our technology.

Spectrophotometric Determination of Trace Strontium with 4- (5-chloro-2-pyridylazo) - 1,3-diaminobenzene.The color reaction of strontium (Ⅱ) with 4- (5-chloro-2-pyridylazo) - 1,3-diaminobenzene was studied in the presence of sodium dodecyl sulfonate (SDS) micelle solution The test shows that in acetic acid sodium acetate buffer solution with pH 6.0, strontium (Ⅱ) forms a 1:1 yellow complex with the reagent. The maximum absorption peak of the complex is at 460 nm wavelength, and the apparent molar absorption coefficient ε Is 1.29 × In 105.25 ml solution, strontium (II) content is 0 ~ 12 μ The method has been applied to the determination of Trace Strontium in aluminum alloys and chemical reagents with satisfactory results.

4-(5-Chloro-2-pyridylazo)-1,3-phenylenediamine shows the phase separation conditions of cobalt-4- ( 5-chloro-2-pyridylazo ) -1,3-diaminobenzene ( 5-Cl-PADAB ) complex with TritonX-100 at cloud point were studied. The complex was enriched by TritonX-100 when the micelle solution was heated to 92 ± 1 °C for 40 min in pH 4.0 ~ 6.0 medium. The absorbance of the enrichment solution was measured at 575 nm. Beer ' s law was obeyed for cobalt content in the range of 0 – 4 μg / 5 mL. The interference ions could be eliminated by adding H _ 2SO _ 4 into TritonX-100 phase separation solution. The proposed method is sensitive, simple and has been used for the direct determination of trace cobalt in human hair and tap water without separation.

5-Cl-PADAB is a highly selective and sensitive colorimetric reagent for the determination of specific metals, particularly cobalt and cadmium. When this reagent reacts with cobalt or cadmium ions, it forms stable and colored metal-ligand complexes. The color intensity of these complexes is directly proportional to the concentration of the metal ions in the solution.

Due to its specific chemical properties, 4-(5-chloro-2-pyridylazo)-1,3-phenylenediamine is often used in scientific research to study the interactions between ligands and metal ions, as well as in the development of new analytical methods for the determination of trace metals.

5-Cl-PADAB can act as a ligand, binding to metal ions through its azo (-N=N-) and pyridyl (-C5H4N-) groups. These interactions are crucial in understanding the coordination chemistry of metal ions, which involves the formation of metal-ligand bonds. By studying these interactions, researchers can gain insights into:

5-Cl-PADAB's sensitivity and selectivity towards certain metal ions make it an excellent candidate for the development of new analytical methods for trace metal determination. These methods can include:

In environmental monitoring, this compound can be used to detect and quantify heavy metals in water, soil, and air samples. The presence of heavy metals in the environment can have adverse effects on ecosystems and human health, so their accurate determination is crucial for environmental protection.

Heavy metals like cobalt and cadmium can enter the environment through various anthropogenic and natural sources, including industrial emissions (such as waste gas and wastewater from smelting, electroplating and chemical industries), agricultural runoff (carrying heavy metals from pesticides, fertilizers and sewage irrigation), improper waste disposal (of heavy metal-containing products and industrial residues), and natural processes (like rock weathering and volcanic activity). Their persistent presence in water, soil, and air can have long-term adverse effects on ecosystems and human health, with specific impacts including the following aspects:

5-Cl-PADAB is a reliable colorimetric reagent for the determination of cobalt and cadmium in environmental samples due to its high selectivity and sensitivity. The procedure involves:

4-(5-Chloro-2-pyridylazo)-1,3-phenylenediamine, commonly abbreviated as Cl-PADA, is a versatile chemical compound belonging to the azo dye class. It is characterized by its unique molecular structure, which incorporates both a pyridyl ring substituted with a chlorine atom and a phenylenediamine moiety linked through an azo (-N=N-) bridge. This specific arrangement the compound distinct properties and applications in various fields.

Chemically, Cl-PADA exhibits a dark red to violet appearance, depending on its state and concentration. It is soluble in organic solvents such as ethanol and dimethylformamide, making it suitable for use in solution-based reactions and analytical procedures. The presence of the azo group is crucial for its color-forming ability, contributing to its utility in dyeing and staining applications.

In analytical chemistry, Cl-PADA finds application as a sensitive and selective chelating agent for metal ions, particularly those of nickel, cobalt, and copper. Its ability to form colored complexes with these metals allows for their quantitative determination through spectrophotometric methods. This analytical significance stems from the compound's high molar absorptivity and stability of the formed metal-ligand complexes.

Moreover, Cl-PADA's reactivity and spectral properties make it a valuable tool in the study of metal ion speciation, kinetic investigations, and environmental monitoring, where trace metal detection is paramount. Its use in these contexts underscores its importance in advancing our understanding and management of metal contaminants in natural and engineered systems.

In summary, 4-(5-Chloro-2-pyridylazo)-1,3-phenylenediamine is a remarkable azo dye with diverse applications rooted in its unique chemical structure and properties. Its capacity to form stable, colored complexes with specific metal ions has established it as a cornerstone in analytical chemistry, contributing to advancements in environmental science, material science, and beyond.

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