L-Cystine, Dihydrochloride

Tests Specifications
Appearance White Crystalline Powder
Specific Rotation [a]20D -177 ~  -165'
Purity (dried basis) 98.0% ~ 102.0%
Solubility (1% /DI water) To Pass Test
Loss on Drying Less than 1.0%
Residue on Ignition Less than 0.1%
Heavy Metals (as Pb) Less than 20 ppm
Iron (Fe) Less than 30 ppm
Chloride (Cl) 22.5 ~ 24.0%

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