Product Details

L-AMINO ACID > L-Cysteine Base

    L-Cysteine Base

    CAS NO:52-90-4

    Chemical Name L-Cysteine Base
    Molecular Structure
    Molecular Formula C3H7NO2S
    Molecular Weight 121.15
    Characteristics White crystalline powder,tasteless,easily soluble in water but insoluble in alcohol and ether
    Packing 25/drum25/carton
    Quality  Standard AJI92/USP28/EP5/FCCIV
    Specific rotation[a]D20° 


    State of solution ≥95.0%
    Heavy metals(Pb) ≤10PPm 
    Residue on ignition ≤0.1%
    Iron(Fe) ≤10PPm
    Loss on drying ≤0.5%
    Other amino acids     Conforms  
    Arsenic(As2O3)  ≤1PPm
    Chloride(CI) ≤0.04%
    Ammonium(NH4) ≤0.02%
    Sulfate(SO4) ≤0.03%
    Assay 98.0101.0%
    PH 4.55.5