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Amino acid > L-Cystine

    L-Cystine

    L-Cystine
    CAS No.56-89-3
    Molecule FormulaC6H12N2O4S2
    Molecule Weight240.30
    Structure Formula
    DescriptionWhite crystals or crystalline powder; almost insoluble in water, practically insoluble in ethanol and in ether.
    Manufacture Standards: AJI92/EP5
    Specification:
    Specific rotation
    -215 - -225°
    Heavy metals
    ≤10ppm
    Water content
    ≤0.20%
    Residue on ignition
    ≤0.10%
    assay
    98.5-101.0%
    pH
    5.0-6.5
    Mainly uses:
    Used in food additive, medicine and cosmetic etc.
    Packing:
    25kgs/ fiber drum.