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L-CYSTEINE HYDROCHLORIDE MONOHYDRATE For Biochemistry

Product Code: 03141


Specifications

Appearance White crystals or crystalline powder
Assay (on anhydrous basis) 98.5 - 101.5%
Identity (IR) Passes test
Residue on ignition Max. 0.4%
Sulphate (SO4) Max. 0.03%
Iron (Fe) Max. 0.003%
Heavy metal (as Pb) Max. 0.0015%
Related compounds Passes test
Individual impurities Max. 0.5%
Total impurities Max. 2.0%
Specific optical rotation (at 589 nm) (c=8, 6 N HCl) on dried substance +5.5° to +7.0°
Loss on drying (at R.T.; pressure max 5 mm of mercury; 24 hrs) 8.0 - 12.0%

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