百科

4-(4-硝基苯偶氮)间苯二酚

CAS号：74-39-5

英文名：4-(4-nitrophenylazo)resorcinol

分子式

C12H9N3O4

熔点

195-200°C (dec.)(lit.)

密度

1.45 g/cm3

分子量

259.218

沸点

509.2ºC at 760 mmHg

溶解度

信号词

危险品标志

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化合物简介

Azo violet (4-(4-Nitrophenylazo)resorcinol) is an organic compound with the chemical formula C12H9N3O4. It is used commercially as a violet dye and experimentally as a pH indicator, turning blue-purple in the presence of magnesium salt in a slightly alkaline, or basic, environment. Azo violet may also be used to test for the presence of ammonium ions. The color of ammonium chloride or ammonium hydroxide solution will vary depending upon the concentration of azo violet used.

基本信息

中文名称

4-(4-硝基苯偶氮)间苯二酚

英文名称

4-(4-nitrophenylazo)resorcinol

中文别名

镁试剂 Ι、2,4-二羟基-4\'-硝基偶氮苯、(对硝基苯偶氮)间苯二酚、偶氮紫、镁试剂I、镁试剂Ⅰ、镁试剂

英文别名

4-(4-Nitrophenylazo)resorcinol、1,3-Benzenediol, 4-[(4-nitrophenyl)azo]-、4-(4-NITROPHENYLAZO)RESORCINOL

CAS号

74-39-5

分子式