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Potassium hydrogen phthalate

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Potassium hydrogen phthalate Basic information
Potassium hydrogen phthalate Chemical Properties
  • Melting point:295-300 °C (dec.)(lit.)
  • Boiling point:98.5-99.5 ;°C/740 ;mmHg(lit .)
  • Density 1.006 g/mL at 20 °C
  • storage temp. Store at RT.
  • solubility H2O: 100 mg/mL, clear, colorless
  • form Solid
  • color White
  • OdorOdorless
  • PH4.00-4.02 (25.0℃±0.2℃, 0.05M)
  • PH Range3.8 - 4.0 (5% aq. sol.)
  • Water Solubility 80 G/L (20 ºC)
  • Merck 14,7612
  • BRN 3637128
  • Stability:Stable. Incompatible with strong oxidizing agents.
  • InChIKeyIWZKICVEHNUQTL-UHFFFAOYSA-M
  • CAS DataBase Reference877-24-7(CAS DataBase Reference)
  • EPA Substance Registry SystemMonopotassium phthalate (877-24-7)
Safety Information
MSDS
Potassium hydrogen phthalate Usage And Synthesis
  • Chemical Propertieswhite crystalline powder
  • UsesAs primary standard for preparing volumetric alkali solutions, also as a buffer in pH determinations.
  • Purification MethodsCrystallise it first from a dilute aqueous solution of K2CO3, then H2O (3mL/g) between 100o and 0o. Before being used as a standard in volumetric analysis, analytical grade potassium hydrogen phthalate should be dried at 120o for 2hours, then allowed to cool in a desiccator. [Beilstein 9 IV 3169.]
Potassium hydrogen phthalate Preparation Products And Raw materials
Potassium hydrogen phthalate(877-24-7)Related Product Information
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