Zincon/2-Carboxy-2′-hydroxy-5′-sulfoformazylbenzene

English Name: Zincon; 2-Carboxy-2′-hydroxy-5′-sulfoformazylbenzene； 1-(2′-Hydroxy-5′-sulfophenyl)-3-phenyl-5-(2″-carboxyphenyl)formazan； 5-(o-Carboxyphenyl)-1-(2-hydroxy-5-sulfophenyl)-3-phenyl formazan

Other names: 5 - (2-carboxyphenyl) - 1 - (2-hydroxy-5-sulfophenyl) - 3-phenylmethyl monosodium salt; 2-carboxy-2 '- hydro-5' - sulfobenzoic acid monosodium salt; O [2- (2-hydroxy-5-sulfophenylazo) benzylidene] hydrazinobenzoic acid monosodium salt; Zinc monosodium salt

CAS No.: 62625-22-3 or 56484-13-0

C20H15N4NaO6S=462.41

Grade: ar

Zinc sensitivity test: acceptable

Alkali dissolution test: acceptable

Complexation test: qualified

Burning residue (calculated by sulfate): ≤ 20.0%

 Physicochemical  properties: purple brown crystalline powder. Soluble in ethanol and alkali, soluble in sodium hydroxide, red, insoluble in water. In case of zinc, a blue compound is formed, which is a solution when it is diluted and a dark blue precipitate when it is concentrated.

Purpose: biochemical research. Colorimetric determination of zinc and copper. The complexation indicator of zinc can be directly determined, and copper and mercury can be determined. Indirect Titration of calcium, zinc, copper, nickel, cobalt, iron, manganese, cadmium, lead, cerium and indium as complexation indicators

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