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Company Ningbo Zhenhai Haide Biochem Co., Ltd.
Categories Ammonium Sulfate
Telephone +86-574-86259898, 86274206
ICP License Issued by the Chinese Ministry
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    L-Cystine

    L-Cystine
    Quality standard:USP, AJI92
    CAS No.: 56-89-3
    Kosher:
    Halal:
    Class:

    Chemical Name: L(-)-3,3'-Dithiobis(2-aminopropanoic acid)
    Structure Formula:

    Molecular Formula: C6H12N2O4S2
    Molecular Weight: 240.29
    Cas No: [56-89-3]
    Characteristics: White crystals or crystalline powder; tasteless. Practically insoluble in water, in ethanol and in ether. Dissolves in dilute HCl.
    Quality Standards: AJI92, FCCIV, In-house (ref USP24)

    ItemSpecifications (AJI92 )USP 24FCC IV
    AppearanceWhite crystal or crystalline powder; tasteless
    DescriptionWhite crystals or crystalline powder
    IdentificationInfrared absorption spectrum
    Specific rotation
    [a]D20°
    -215 °- -225 °-215- -225 °-215- -225 °
    State of solution
    (Transmittance)
    ≥ 98.0%------
    Chloride(CL)≤ 0.020%≤ 0.020%---
    Ammonium(NH4)≤ 0.02%------
    Sulfate(SO4)≤ 0.020%≤ 0.020%---
    Iron(Fe)≤ 20PPm≤ 20PPm---
    Heavy metals(Pb)≤ 10PPm≤ 10PPm20ppm
    Arsenic(As2O3)≤ 1PPm------
    Other amino acidsConforms------
    Loss on drying≤ 0.20%≤ 0.20%≤ 0.20%
    Residue on ignition (Sulfated)≤ 0.10%≤ 0.10%≤ 0.10%
    Assay98.5-101.0%98.5-101.0%98.5-101.0%
    PH5.0-6.55.0-6.5---
    Organic Volatile
    impurities
    ---Meets the requirements---

    Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well-closed containers, at controlled room temperature.
    R ecommended limit: 1 year.

    Quality L-Cystine for sale
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