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Switzerland
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L(-)-Cystin 99%
L(-)-Cystin 99%
Zertifikate
L(-)-Cystin 99%

3 Varianten

Product Details & Documents
Synonyme:  (R)-(-)-Cystine, (2R,2'R)-3,3'-Disulphanediylbis(2-aminopropanoic acid), (H-Cys-OH)2
  • CAS Nummer:56-89-3
  • Formel:HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
  • MDL-Nummer:MFCD00064228
  • Molekulargewicht:240.3 g/mol
  • Merck-Index:13,02811
  • Siedepunkt:428 °C (1013 hPa)
  • Schmelzender Platingehalt:260…261 °C
  • Dichte:1,677 g/cm³ (20 °C)
  • Lagertemperatur:Raumtemperatur
  • EINECS:200-296-3

Documents

Spezifikationen für diese Produktfamilie

Ergebnisse des Spezifikationstests

  • Appearance:
    White to almost white Crystalline powder or crystals
  • Infrared spectrum:
    Conforms
  • Loss on drying:
    ≤0.5 % (1 g, 105°C, 3 h)
  • Sulfated ash:
    ≤0.1 %
  • Specific optical rotation:
    -210° to -224° (20°C, 589 nm) (c=2, 1 M HCl) (on dried substance)
  • Titration excess NaOH:
    ≥98.5 % (On dried substance)
  • Chloride (Cl):
    ≤200 ppm
  • Sulfate (SO4):
    ≤300 ppm
  • Ammonium (NH4):
    ≤200 ppm
  • Iron (Fe):
    ≤10 ppm
  • Heavy metals (as Pb):
    ≤10 ppm
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