523-67-1

Basic information

• Product Name: 2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL
• Synonyms: XYLYLAZO VIOLET II;XYLYLAZO VIOLET 2;XYLIDYL BLUE II;magon;2-[3-(2,4-DIMETHYLPHENYLAMINOCARBOXY)-2-HYDROXY-1-NAPHTHYLAZO]PHENOL;2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL;1-AZO-2-HYDROXY-3-(2,4-DIMETHYLCARBOXYANILIDO)NAPHTHALENE-1-(2-HYDROXYBENZENE);3-hydroxy-4-[(2-hydroxyphenyl)azo]-N-(2,4-xylyl)naphthalene-2-carboxamide
• CAS NO: 523-67-1
• Molecular Formula: C25H21N3O3
• Molecular Weight: 411.45
• EINECS: 208-347-1
• Product Categories: Analytical Chemistry;Azo Compounds;Chelating Reagents;Naphthylazo Compounds
• Mol File: 523-67-1.mol
• Article Data: 0

Chemical Properties

• Melting Point: 247 °C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.26g/cm³
• Refractive Index: 1.652
• PKA: 8.50±0.30(Predicted)
• CAS DataBase Reference: 2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL(CAS DataBase Reference)
• NIST Chemistry Reference: 2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL(523-67-1)
• EPA Substance Registry System: 2-[2-HYDROXY-3-(2,4-XYLYLCARBAMOYL)-1-NAPHTHYLAZO]PHENOL(523-67-1)

Safety Data

• Statements: 20/21/22-36/37/38
• Safety Statements: 22-24/25
• WGK Germany: 3
• Hazardous Substances Data: 523-67-1(Hazardous Substances Data)

Usage

Purification Methods

Suspend it in H2O and add aqueous NaOH until it dissolves, filter and acidify with dilute HCl. Collect the dye, dissolve it in hot EtOH (solubility is 100mg/L at ca 25o) concentrate to a small volume and allow to cool. The solubility of the Na salt in H2O is 0.4mg/mL. [Mann & Yoe Anal Chim Acta 16 155 1957, Mann & Yoe Anal Chem 28 202 1956.]

InChI:InChI=1/C25H21N3O3/c1-15-11-12-20(16(2)13-15)26-25(31)19-14-17-7-3-4-8-18(17)23(24(19)30)28-27-21-9-5-6-10-22(21)29/h3-14,27,29H,1-2H3,(H,26,31)/b28-23-