Azoviolet/Magneson I/4-(4-Nitrophenylazo)resorcinol

English Name: azoviolet; Magneson I； 4-(4-Nitrophenylazo)resorcinol

Other names: p-Nitrobenzene azo resorcinol; Magnesium reagent I; Azo violet; Even oxygen violet; (p-Nitrobenzene azo) resorcinol; 4 - (4-nitrophenylazo) resorcinol

CAS No.: 74-39-5

C12H9N3O4=259.22

Grade: ar

Sensitivity test: acceptable

Maximum absorption wavelength: 555 ～ 565nm

Burning residue (calculated by sulfate): ≤ 0.2%

Sodium hydroxide solution dissolution test: acceptable

Physicochemical properties: reddish brown powder. It is red purple in dilute alkali solution, slightly soluble in boiling ethanol, acetone, acetic acid and toluene, all yellow, almost insoluble in water. The melting point is 199-200 ℃. Irritating

Purpose: biochemical research. Determination of magnesium and molybdenum. Adsorption indicator

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