Product Details

L-AMINO ACID > L-Cystine

    L-Cystine

    CAS NO56-89-3 

    Test Items Limit
    Molecular Structure
    Specific rotation between -215 ° to -225 °
    State of Solution Clarity,Clear and color,not more
    (Transmittance)  cloured than reference solution Y7
    Ammonium(NH4)  
    Sulfate(SO4) Max200ppm
    Iron(Fe) Max200ppm
    Heavy  metals(Pb) Max20ppm
    Arsenic(AS2 O3) Max10ppm
    Other  amino  acids Max1ppm
    Loss on drying Not Detectable
    Sulphated Ash Max0.2%
    Assay Max 0.1%
    PH

    98.5%~101.0%

    5.0  to  6.5