1141-59-9

Basic information

• Product Name: 4-(2-PYRIDYLAZO)RESORCINOL
• Synonyms: 4-(2'-PYRIDYLAZO)-RESORCINOL;4-(2-PYRIDYLAZO)RESORCINOL;TIMTEC-BB SBB008938;PAR;3-Benzenediol,4-(2-pyridinylazo)-1;4-(2-pyridinylazo)-3-benzenediol;4-(2-PYRIDYLAZO)RESORCINOL 98%;4-(2-PYRIDYLAZO)RESORCINOL, FOR THE DETE RMINATION OF HG
• CAS NO: 1141-59-9
• Molecular Formula: C11H9N3O2
• Molecular Weight: 215.21
• EINECS: 214-528-6
• Product Categories: Analytical Chemistry;Azo Compounds;Chelating Reagents;Pyridylazo Compounds
• Mol File: 1141-59-9.mol
• Article Data: 0

Chemical Properties

• Melting Point: 192-202 °C(lit.)
• Boiling Point: 355.48°C (rough estimate)
• Flash Point: 218.84 °C
• Appearance: Orange/Powder
• Density: 1.2579 (rough estimate)
• Vapor Pressure: 2.73E-08mmHg at 25°C
• Refractive Index: 1.4930 (estimate)
• Storage Temp.: Store below +30°C.
• Solubility: DMSO (Slightly), Methanol (Slightly)
• PKA: 8.18±0.35(Predicted)
• Water Solubility: Soluble in water (partly), and ethanol (slightly). Insoluble in ether, and low-polarity solvents.
• BRN: 184665
• CAS DataBase Reference: 4-(2-PYRIDYLAZO)RESORCINOL(CAS DataBase Reference)
• NIST Chemistry Reference: 4-(2-PYRIDYLAZO)RESORCINOL(1141-59-9)
• EPA Substance Registry System: 4-(2-PYRIDYLAZO)RESORCINOL(1141-59-9)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• RIDADR: 2811
• WGK Germany: 3
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 1141-59-9(Hazardous Substances Data)

Usage

Chemical Properties

ORANGE POWDER

Uses

4-(2-Pyridylazo)resorcinol is used in studies of zinc release from Escherichia coli aspartate transcarbamoylase. It is used in cloud point extraction of copper, zinc, cadmium, and nickel in water samples. It is used in the chelate titration of aluminum, mercury, lead and nickel. It is employed as reagent in the colorimetric analysis of gold, cobalt, chromium, iron.

General Description

for synthesis

Purification Methods

Purify PAR as the sodium salt by recrystallisation from 1:1 EtOH/water. Purity can be checked by TLC using a silica gel plate and a mixed solvent (n-BuOH:EtOH:2M NH3; 6:2:2). [Beilstein 22 I 694, 22 III/IV 7074, 22/14 V 619.]

InChI:InChI=1/C11H9N3O2/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11/h1-7,15-16H