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Phosphotungstic acid hydrate

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Phosphotungstic acid hydrate Basic information
Phosphotungstic acid hydrate Chemical Properties
  • Melting point:~95 °C(lit.)
  • storage temp. room temp
  • form Solid
  • color White
  • PH1.3 (20g/l, H2O, 20℃)
  • Water Solubility soluble
  • Sensitive Hygroscopic
  • Stability:hygroscopic
  • CAS DataBase Reference12501-23-4(CAS DataBase Reference)
Safety Information
Phosphotungstic acid hydrate Usage And Synthesis
  • Chemical PropertiesCrystalline
  • UsesPhosphotungstic acid hydrate has been a useful histology stain for cell specimens.
  • Purification MethodsA few drops of conc HNO3 are added to 100g of phosphotungstic acid dissolved in 75mL of water, in a separating funnel, and the solution is extracted with diethyl ether. The lowest of the three layers, which contains a phosphotungstic acid-ether complex, is separated, washed several times with 2M HCl, then with water and again extracted with ether. Evaporation of the ether under vacuum with mild heating on a water bath gives crystals which are dried under vacuum and ground [Matijevic & Kerker, J Am Chem Soc 81 1307 1959].
Phosphotungstic acid hydrate Preparation Products And Raw materials
Phosphotungstic acid hydrate(12501-23-4)Related Product Information
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