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Study on the Color Reaction of 2-(5-Carboxy- 1,3,4-triazolylazo)-5-diethylamino Aniline with Copper(II)

Pan Fu-you

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Abstract

In this paper, the condition of color reaction of a new reagent 2-(5-carboxy-1,3,4-triazolylazo)-5-diethylamino aniline (CTZAN) with copper(Ⅱ) are reported. The results show that the CTZAN reacts with Cu 2+ to form a stable purple complex(1∶2) in the medium of HAc-NaAc(pH3.0). The maximum absorption and apparent molar absorptivity are 565nm and 3.03×10 4L·mol -1 ·cm -1 , respectively. Beer's law is obeyed in the range of 0-0.8mg/L for copper. The method has been applied to the direct determination of copper in magnesium alloy and aluminium alloy with satisfactory results.

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What this paper is about

In this paper, the condition of color reaction of a new reagent 2-(5-carboxy-1,3,4-triazolylazo)-5-diethylamino aniline (CTZAN) with copper(Ⅱ) are reported. The results show that the CTZAN reacts with Cu 2+ to form a stable purple complex(1∶2) in the medium of HAc-NaAc(pH3.0). The maximum absorption and apparent molar absorptivity are 565nm and 3.03×10 4L·mol -1 ·cm -1 , respectively. Beer's law is obeyed in the range of 0-0.8mg/L for copper. The method has been applied to the direct determination of copper in magnesium alloy and aluminium alloy with satisfactory results.

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Available abstract

In this paper, the condition of color reaction of a new reagent 2-(5-carboxy-1,3,4-triazolylazo)-5-diethylamino aniline (CTZAN) with copper(Ⅱ) are reported. The results show that the CTZAN reacts with Cu 2+ to form a stable purple complex(1∶2) in the medium of HAc-NaAc(pH3.0). The maximum absorption and apparent molar absorptivity are 565nm and 3.03×10 4L·mol -1 ·cm -1 , respectively. Beer's law is obeyed in the range of 0-0.8mg/L for copper. The method has been applied to the direct determination of copper in magnesium alloy and aluminium alloy with satisfactory results.

Key concepts: Molar absorptivity, Copper, Aniline, Reagent, Color reaction, Chemistry, Aluminium, Alloy

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Study on the Color Reaction of 2-(5-Carboxy- 1,3,4-triazolylazo)-5-diethylamino Aniline with Copper(II) — Research Paper | ScholarLens