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Molecular sieves, 3 A, beads, 4-8 mesh, 5KG

SKU:
208574-5KG
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  • Description

    Molecular sieves, 3 A, beads, 4-8 mesh, 5KG

    Synonym(s):
    Molecular Sieve UOP Type 3Å
    Linear Formula:
    KnNa12-n[(AlO2)12(SiO2)12] · xH2O
    CAS Number:
    308080-99-1
    MDL number:
    MFCD00147627
    eCl@ss:
    32110204
    NACRES:
    NB.24

    PROPERTIES

    form

    beads

    Quality Level

    100

    particle size

    4-8 mesh

    pore size

    3 Å

    DESCRIPTION

    General description

    Molecular sieves are crystalline metal aluminosilicates having a 3-dimensional interconnecting network of silica and alumina tetrahedra. Natural water of hydration is removed from this network by heating to produce uniform cavities which selectively adsorb molecules of a specific size. The 3A form is made by substituting potassium cations for the inherent sodium ions of the 4A structure, reducing the effective pore size to ~3Å, excluding diameter >3Å, e.g., ethane. The 4 to 8-mesh type is normally used in gas-phase applications. Molecular sieves are considered a universal drying agent in polar and nonpolar media.

    Application

    Molecular sieves have been used for the drying of dimethyl sulfoxide.
    They may also be used in the following:
    • Synthesis of ecteinascidin 743 (a potential marine-derived antitumor agent).
    • Preparation of vanillyl nonanoate (a model capsinoid compound).
    • Highly enantioselective Friedel-Crafts alkylation of indoles with nitroalkenes.
    Molecular sieves, 3 Å may be used in the following processes:
    • As a general-purpose drying agent in polar and nonpolar media.
    • Commercial dehydration of unsaturated hydrocarbon streams, including cracked gas, propylene, butadiene, acetylene
    • Drying polar liquids such as methanol and ethanol.
    • Adsorption of molecules such as NH3 and H2O from a N2/H2 flow.

    Packaging

    1 kg in poly bottle
    5 kg in fiber drum

    SAFETY INFORMATION

    Storage Class Code

    11 - Combustible Solids

    WGK

    WGK 3

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable