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United States
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L(+)-Asparagine monohydrate, meets analytical specification of Ph.Eur.
 
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L(+)-Asparagine monohydrate, meets analytical specification of Ph.Eur.

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  • Appearance:
    Colorless to white to almost white Crystalline powder or crystals
  • Infrared spectrum:
    Conforms
  • Loss on drying:
    10.5 % to 12.5 % (1 g, 130°C, 3 h)
  • Sulfated ash:
    ≤0.1 % (1 g)
  • Appearance of solution:
    Clear colorless
  • Related substances:
    ≤0.5 % (impurity A)
  • pH:
    4.0 to 6.0
  • Specific optical rotation:
    +33.7° to +36.0° (20°C, 589 nm) (on dried substance)
  • Titration with HClO4:
    99.0 to 101.0 % (on dried substance)
  • Sulfates:
    ≤200 ppm
  • Chlorides:
    ≤200 ppm
  • Ammonium (NH4):
    ≤0.1 %
  • Iron (Fe):
    ≤10 ppm

 

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