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

Description

4-(2-Pyridylazo)resorcinol, also known as PAR, is an organic compound that serves as a versatile reagent in various analytical and chemical applications. It is an orange powder with distinct chemical properties, making it a valuable component for synthesis and detection processes in different industries.

Uses

Used in Biochemical Research:
4-(2-Pyridylazo)resorcinol is used as a reagent in the study of zinc release from Escherichia coli aspartate transcarbamoylase. It aids in understanding the role of zinc in the enzyme's function and its interaction with other biochemical components.
Used in Environmental Analysis:
In the environmental industry, 4-(2-Pyridylazo)resorcinol is used for cloud point extraction of heavy metals such as copper, zinc, cadmium, and nickel in water samples. This application helps in the efficient and accurate detection of these metals, which are crucial for monitoring water quality and ensuring environmental safety.
Used in Analytical Chemistry:
4-(2-Pyridylazo)resorcinol is employed in the chelate titration of metals like aluminum, mercury, lead, and nickel. This technique is vital for determining the concentration of these metals in various samples, which is essential in quality control and material analysis.
Used in Colorimetric Analysis:
In the field of colorimetric analysis, 4-(2-Pyridylazo)resorcinol is used as a reagent for the detection and quantification of metals such as gold, cobalt, chromium, and iron. Its ability to form colored complexes with these metals allows for accurate and sensitive measurements, making it a valuable tool in analytical chemistry.
Overall, 4-(2-Pyridylazo)resorcinol is a multifaceted compound with applications in various industries, including biochemical research, environmental analysis, and analytical chemistry. Its unique properties and versatility make it an essential component in the study and detection of various metals and their interactions.

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