74-39-5
Chemical Structure
4-(4-Nitrophenylazo)resorcinol
Synonym(s): Azo Violet; Magneson I
- CAS No.: 74-39-5
- Formula:C12H9N3O4
- Molecular Weight:259.22
IUPAC Name: (E)-4-((4-nitrophenyl)diazenyl)benzene-1,3-diol
InChIKey: NGPGYVQZGRJHFJ-BUHFOSPRSA-N
SMILES: OC1=CC=C(C(O)=C1)/N=N/C2=CC=C(C=C2)[N+]([O-])=O
Biological Activity: 4-(4-Nitrophenylazo)resorcinol (Azo Violet) is an azo purple dye used experimentally as a pH indicator, showing yellow when the pH value is lower than 11 and purple when the pH value is higher than 13. In slightly alkaline or alkaline environments, it also turns dark blue in the presence of magnesium salts. Azo Violet can also be used to test for the presence of ammonium ions. The color of the ammonium chloride or ammonium hydroxide solution will change depending on the concentration of azo violet used[1][2].
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4-(4-Nitrophenylazo)resorcinol | 4-(4-Nitrophenylazo)resorcinol (Azo Violet) is an azo purple dye used experimentally as a pH indicator, showing yellow when the pH value is lower than 11 and purple when the pH value is higher than 13. In slightly alkaline or alkaline environments, it also turns dark blue in the presence of magnesium salts. Azo Violet can also be used to test for the presence of ammonium ions. The color of the ammonium chloride or ammonium hydroxide solution will change depending on the concentration of azo violet used. | |||||||||||||||||||||
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- [1]. Namazi H, et al.In vitro photo-controlled drug release system based on amphiphilic linear-dendritic diblock copolymers; self-assembly behavior and application as nanocarrier. J Pharm Pharm Sci. 2011;14(2):162-80.
- [2]. Cyril N, et al. Catalytic activity of Derris trifoliata stabilized gold and silver nanoparticles in the reduction of isomers of nitrophenol and azo violet. Nano-Structures & Nano-Objects. 2020 Apr 1;22:100430.
Keywords
