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Phenylphosphonic acid

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Phenylphosphonic acid Basic information
Phenylphosphonic acid Chemical Properties
  • Melting point:162-164 °C (lit.)
  • Boiling point:241-243 °C(lit.)
  • Density 1.412 g/mL at 25 °C(lit.)
  • refractive index n20/D 1.523(lit.)
  • Flash point:>230 °F
  • storage temp. Sealed in dry,Room Temperature
  • form Crystalline Powder
  • pkapK1:1.83;pK2:7.07 (25°C)
  • color White to off-white
  • Water Solubility 40.4 g/100 mL (25 ºC)
  • BRN 2245168
  • CAS DataBase Reference1571-33-1(CAS DataBase Reference)
  • EPA Substance Registry SystemPhosphonic acid, phenyl- (1571-33-1)
Safety Information
MSDS
Phenylphosphonic acid Usage And Synthesis
  • Chemical Propertieswhite to off-white crystalline powder
  • UsesIntermediate in antifouling paint agents; catalyst in organic reactions.
  • Hazard Highly toxic.
  • Purification MethodsIt is best to recrystallise it from H2O by concentrating an aqueous solution to a small volume and allowing to crystallise. Wash the crystals with ice cold H2O and dry them in a vacuum desiccator over H2SO4. [Lecher et al. J Am Chem Soc 76 1045 1954.] pK2 5 values in H2O are 7.07, and in 50% EtOH 8.26. [Jaffé et al. J Am Chem Soc 75 2209 1953, IR: Daasch & Smith Anal Chem 23 853 1951, Beilstein 16 IV 1068.]
Phenylphosphonic acid Preparation Products And Raw materials
Phenylphosphonic acid(1571-33-1)Related Product Information
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