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Molecular Sieves 4A

Molecular Sieve 4A is an alkali metal aluminosilicate; Molecular sieve 4A is the sodium form of the type A crystal structure. Molecular sieve 4A adsorbs molecules with effective diameters small than 4 anstrom (0.4nm) such as water, CO2, H2S, methanol, ethanol.

Molecular Sieves 4A


Molecular Sieve 4A is an alkali metal aluminosilicate; Molecular sieve 4A is the sodium form of the type A crystal structure. Molecular sieve 4A adsorbs molecules with effective diameters small than 4 anstrom (0.4nm) such as water, CO2, H2S, methanol, ethanol.


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Type 4A
Composition 1 Na2O: 1 Al2O3: 2.0 ± 0.1 SiO2 : x H2O
Description This sodium form represents the type A family of molecular sieves. Effective pore opening is 4Å, thus excluding molecules of effective diameter >4Å, e.g., propane.
Major Applications Preferred for static dehydration in closed liquid or gas systems, e.g., in packaging of drugs, electric components and perishable chemicals; water scavenging in printing and plastics systems and drying saturated hydrocarbon streams.Adsorbed species include SO2, CO2, H2S, C2H4, C2H6, and C3H6. Generally considered a universal drying agent in polar and nonpolar media.



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Molecular Sieve 4A is made from zeolite powder 4A (>70%) and binder. Zeolite powder 4A is generated by reaction of water, sodium hydroxide, sodium silicate and sodium aluminate. Molecular sieve 4A is usually used for in packaging of drugs, electronic components.Since 4A molecular sieve is more easier to be produced than 3A molecular sieve, 5A molecular sieve, 13X molecular sieve, it is more economic than other three desiccant. Molecular Sieve 4A have the shape of beads, pallets.

Storage:

Keep 4A Molecular Sieve in an air tight container until ready for use to avoid unintended moisture adsorption.

Packing:

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