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L-Cysteine Base CAS:52-90-4 << BACK
ItemLimit
Specific Rotation [a]D20o+8.3 to + 9.5 degree
State of Solution 95.0% Min
Chloride (Cl)0.04% Max
Ammonium (NH4)0.02% Max
Sulfate (SO4)0.03% Max
Iron (Fe) 10ppm Max
Heavy Metals (Pb)10ppm Max
Arsenic (As2O3)1ppm Max
Other Amino AcidsNot detectable
Loss on Drying0.5% Max
Residue in Ignition0.1% Max
Assay98.0% to 101.0%
PH 4.5 to 5.5
IdentificationPass test

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