4-(2-Pyridylazo)resorcinol , 98% , 1141-59-9

Synonym(s):
4-(2′-Pyridylazo)-resorcinol;4-(2-Pyridinylazo)-1,3-dihydroxybenzene;PAR

CAS NO.：1141-59-9

Empirical Formula: C11H9N3O2

Molecular Weight: 215.21

MDL number: MFCD00006256

EINECS: 214-528-6

PRODUCT Properties

• Melting point: 192-202 °C(lit.)
• Boiling point: 355.48°C (rough estimate)
• Density: 1.2579 (rough estimate)
• refractive index: 1.4930 (estimate)
• storage temp.: room temp
• solubility: DMSO (Slightly), Methanol (Slightly)
• form: Powder
• pka: 8.18±0.35(Predicted)
• color: Orange
• Water Solubility: Soluble in water (partly), and ethanol (slightly). Insoluble in ether, and low-polarity solvents.
• BRN: 184665
• CAS DataBase Reference: 1141-59-9(CAS DataBase Reference)
• EPA Substance Registry System: 1,3-Benzenediol, 4-(2-pyridinylazo)- (1141-59-9)

Description and 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.

Safety

• Symbol(GHS): GHS06,GHS07
• Signal word: Danger
• Hazard statements: H301+H311+H331-H315-H319-H335
• Precautionary statements: P280a-P304+P340-P305+P351+P338-P501a-P261-P264-P270-P271-P280-P301+P310+P330-P302+P352+P312+P361+P364-P304+P340+P311-P305+P351+P338+P337+P313-P403+P233-P405-P501
• Hazard Codes: Xi
• Risk Statements: 36/37/38
• Safety Statements: 26-36
• RIDADR: 2811
• WGK Germany: 3
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• HS Code: 29333990