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Product Name

 L-CYSTEINE HYDROCHLORIDE (MONOHYDRATE) (FOR BIOCHEMISTRY)

Article No

 C0081200500

CAS No

 7048-04-6

Molecular Formula

 C3H8ClNO2S.H2O

Molecular Weight

 175.64

Specifications

Appearance:

 White crystals or crystalline powder

Identity (IR):

 Passes test

Sulphate (SO4):

 Max. 0.03%

Heavy metal (as Pb):

 Max. 0.0015%

Iron (Fe):

 Max. 0.003%

Assay (on anhydrous basis):

 98.5 - 101.5%

Residue on ignition:

 Max. 0.4%

Related compounds:

 Passes test

Individual impurities:

 Max. 0.5%

Total impurities:

 Max. 2.0%

Loss on drying (at R.T.; pressure max 5 mm of mercury; 24 hrs) :

 8.0 - 12.0%

Specific optical rotation ([?]20/D):

 +5.7° to +6.8°