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Synthesis of 2-hydroxy-4-sulfamylbenzen-3-(4-nitropheny1)-triazene and Its Colour Reaction with Nickel

Yun‐Fa Zheng

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Abstract

The 2-hydroxy-4-sulfamylbenzen-3-(4-nitrophenyl)-triazene(HSNPT)has been synthesized.The color reaction of HSNPT with nickel was investigated.At the presence of the surface active agent Triton X-100 and in a Na 2B 4O 7-NaOH medium of pH 10.0～12.0,HSNPT with Ni(Ⅱ)forms a yellow complex.The molar absorbtivity of the complex is e =1.18×10 5 L·mol -1 ·cm -1 at the determination wavelength of 540 nm.The molar ratio of Ni(Ⅱ) to HSNPT is 1∶3.The Beer's law is well obeyed in the rang of 0～480 μg/L for nickel at the determination wavelength.This method has been applied to determine trace amounts of nickel in steels with satisfatory result.

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What this paper is about

The 2-hydroxy-4-sulfamylbenzen-3-(4-nitrophenyl)-triazene(HSNPT)has been synthesized.The color reaction of HSNPT with nickel was investigated.At the presence of the surface active agent Triton X-100 and in a Na 2B 4O 7-NaOH medium of pH 10.0～12.0,HSNPT with Ni(Ⅱ)forms a yellow complex.The molar absorbtivity of the complex is e =1.18×10 5 L·mol -1 ·cm -1 at the determination wavelength of 540 nm.The molar ratio of Ni(Ⅱ) to HSNPT is 1∶3.The Beer's law is well obeyed in the rang of 0～480 μg/L for nickel at the determination wavelength.This method has been applied to determine trace amounts of nickel in steels with satisfatory result.

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Available abstract

The 2-hydroxy-4-sulfamylbenzen-3-(4-nitrophenyl)-triazene(HSNPT)has been synthesized.The color reaction of HSNPT with nickel was investigated.At the presence of the surface active agent Triton X-100 and in a Na 2B 4O 7-NaOH medium of pH 10.0～12.0,HSNPT with Ni(Ⅱ)forms a yellow complex.The molar absorbtivity of the complex is e =1.18×10 5 L·mol -1 ·cm -1 at the determination wavelength of 540 nm.The molar ratio of Ni(Ⅱ) to HSNPT is 1∶3.The Beer's law is well obeyed in the rang of 0～480 μg/L for nickel at the determination wavelength.This method has been applied to determine trace amounts of nickel in steels with satisfatory result.

Key concepts: Triazene, Nickel, Color reaction, Chemistry, Molar ratio, Nuclear chemistry, Molar absorptivity, Inorganic chemistry

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