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Synthesis of 1-azobenzene-3-(5-cyano-2-pyridyl)-triazene and Its Color Reaction with Copper

GU Yong-bing

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Abstract

1-azobenzene-3-(5-cyano -2-pyridyl)-triazene (ABCPDT)as a chromogenic reagent was synthesized and its color reaction with copper has been investigated. In the presence of the surface active agent NP-10 and in the Na 2B 4O 7-NaOH medium of pH 11.0, ABCPDT forms a red complex with Cu(Ⅱ).The apparent molar absorbtivity of the complex is 1.43×10 5 L·mol -1 ·cm -1 at 535 nm(λ max ).The molar ratio of Cu(Ⅱ) to ABCPDT is 1∶3. Beer's law is well obeyed in the range of 0～480 μg/L for copper. The method has been applied to the direct determination of copper in alloy samples with satisfactory results.

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What this paper is about

1-azobenzene-3-(5-cyano -2-pyridyl)-triazene (ABCPDT)as a chromogenic reagent was synthesized and its color reaction with copper has been investigated. In the presence of the surface active agent NP-10 and in the Na 2B 4O 7-NaOH medium of pH 11.0, ABCPDT forms a red complex with Cu(Ⅱ).The apparent molar absorbtivity of the complex is 1.43×10 5 L·mol -1 ·cm -1 at 535 nm(λ max ).The molar ratio of Cu(Ⅱ) to ABCPDT is 1∶3. Beer's law is well obeyed in the range of 0～480 μg/L for copper. The method has been applied to the direct determination of copper in alloy samples with satisfactory results.

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Available abstract

1-azobenzene-3-(5-cyano -2-pyridyl)-triazene (ABCPDT)as a chromogenic reagent was synthesized and its color reaction with copper has been investigated. In the presence of the surface active agent NP-10 and in the Na 2B 4O 7-NaOH medium of pH 11.0, ABCPDT forms a red complex with Cu(Ⅱ).The apparent molar absorbtivity of the complex is 1.43×10 5 L·mol -1 ·cm -1 at 535 nm(λ max ).The molar ratio of Cu(Ⅱ) to ABCPDT is 1∶3. Beer's law is well obeyed in the range of 0～480 μg/L for copper. The method has been applied to the direct determination of copper in alloy samples with satisfactory results.

Key concepts: Triazene, Copper, Chromogenic, Azobenzene, Reagent, Chemistry, Color reaction, Azo compound

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Synthesis of 1-azobenzene-3-(5-cyano-2-pyridyl)-triazene and Its Color Reaction with Copper — Research Paper | ScholarLens