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HomeProduct name list4-(2-PYRIDYLAZO)RESORCINOL

4-(2-PYRIDYLAZO)RESORCINOL

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
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 14:07:02
4-(2-PYRIDYLAZO)RESORCINOL Structural

What is 4-(2-PYRIDYLAZO)RESORCINOL?

Chemical properties

ORANGE POWDER

The Uses of 4-(2-PYRIDYLAZO)RESORCINOL

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.]

Properties of 4-(2-PYRIDYLAZO)RESORCINOL

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)
pka 8.18±0.35(Predicted)
form  Powder
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)

Safety information for 4-(2-PYRIDYLAZO)RESORCINOL

Signal word Danger
Pictogram(s)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P270:Do not eat, drink or smoke when using this product.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405:Store locked up.
P403+P233:Store in a well-ventilated place. Keep container tightly closed.
P501:Dispose of contents/container to..…

Computed Descriptors for 4-(2-PYRIDYLAZO)RESORCINOL

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