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CAS 16593-81-0

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4-(2-Pyridylazo)resorcinol monosodium saltmonohydrate

Description:
4-(2-Pyridylazo)resorcinol monosodium salt monohydrate, commonly referred to as PAR, is a chemical compound known for its application as a chelating agent and colorimetric reagent in analytical chemistry. It features a resorcinol backbone substituted with a pyridylazo group, which imparts its distinctive properties. The compound is typically encountered as a reddish-brown solid that is soluble in water, making it useful in various aqueous applications. Its ability to form stable complexes with metal ions, particularly transition metals, allows it to be employed in spectrophotometric determination of metal concentrations. The monosodium salt form enhances its solubility and reactivity in solution. Additionally, PAR exhibits pH-dependent color changes, which can be utilized in titrations and other analytical methods. The monohydrate form indicates the presence of water molecules in its crystalline structure, which can influence its stability and solubility. Overall, 4-(2-Pyridylazo)resorcinol monosodium salt monohydrate is a valuable reagent in both research and industrial applications, particularly in the fields of environmental and analytical chemistry.
Formula:C11H10N3NaO3
InChI:InChI=1S/C11H9N3O2.Na.H2O/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11;;/h1-7,15-16H;;1H2/q;+1;/p-1/b14-13+;;
Synonyms:
  • 4-(2-Pyridylazo)Resorcinol Monosodium Salt Monohydrate
  • Sodium 4-(2-Pyridylazo)Benzene-1,3-Diol Hydrate
  • PAR-Na
  • PAR monosodium salt hydrate
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