114669

4-(4-Nitrophenylazo)resorcinol

Dye content 90 %

• Synonym(s): Azoviolet, Magneson I
• Linear Formula: O₂NC₆H₄N=NC₆H₃-1,3-(OH)₂
• CAS Number: 74-39-5
• Molecular Weight: 259.22
• Beilstein: 674709
• EC Number: 200-808-5
• MDL number: MFCD00007310
• UNSPSC Code: 12171500
• PubChem Substance ID: 24847188
• NACRES: NA.47

Properties

• form: powder
• Quality Level: 200
• composition: Dye content, 90%
• mp: 195-200 °C (dec.) (lit.)
• λmax: 432 nm
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Oc1ccc(\N=N\c2ccc(cc2)[N+]([O-])=O)c(O)c1
• InChI: 1S/C12H9N3O4/c16-10-5-6-11(12(17)7-10)14-13-8-1-3-9(4-2-8)15(18)19/h1-7,16-17H/b14-13+
• InChI key: NGPGYVQZGRJHFJ-BUHFOSPRSA-N

Description

Biochem/physiol Actions

4-(4-Nitrophenylazo) resorcinol, also known as azo violet or magneson I, is a red colored powder. It functions as a spot test reagent and forms blue lake on reaction with Mg(OH)₂ in alkaline solution. It is mainly used for determining the presence of magnesium in the solution.

4-(4-Nitrophenylazo)resorcinol is a pH indicator.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves