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L(+)-Cysteine hydrochloride monohydrate 98.5-101.0% (alkalimetric, calculated on anhydrous substance), EMPROVE® ESSENTIAL Ph. Eur., USP, SAFC®
Irritant
L(+)-Cysteine hydrochloride monohydrate 98.5-101.0% (alkalimetric, calculated on anhydrous substance), EMPROVE® ESSENTIAL Ph. Eur., USP, SAFC®
Supplier:  MilliporeSigma
Certificates
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Irritant
L(+)-Cysteine hydrochloride monohydrate 98.5-101.0% (alkalimetric, calculated on anhydrous substance), EMPROVE® ESSENTIAL Ph. Eur., USP, SAFC®
Supplier:  MilliporeSigma
Certificates

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Specification Test Results

  • Assay (Iodometric, calc. on Dried Substance):
    98.5-101.0%
  • Ammonium (NH4):
    Max. 0.02%
  • Appearance:
    White Crystalline Powder or Colorless Crystals
  • Appearance of Solution (25 g/l, water):
    Clear and no more Intense in Color than BY6
  • Heavy metals (as Pb):
    Max 0.001%
  • Identity (IR-spectrum):
    Passes test
  • Iron (Fe):
    Max. 0.002%
  • Loss on Drying (Vacuum):
    Max. 12.0%
  • Ninhydrin-Positive Substances (TLC):
    Max. 0.5%
  • Organic Volatile Impurities (According to USP):
    Conforms
  • Residual Solvents (Ph.Eur./ICH):
    Excluded by Manufacturing Process
  • Specific Rotation [a]20/D; 80 g/l; HCl 250 g/l, Dried:
    +5.5 - +7.0°
  • Specific rotation [a]25/D; 80g/l; HCl 6mol/l, Dried:
    +5.7 - +6.8°
  • Sulfate (SO4):
    Max. 0.03%
  • Sulfated ash (600 °C):
    Max. 0.1%

Specification Test Results

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