1 kg Molecular Sieve 4A Beads,  MSE Supplies

MSE PRO 1 kg Molecular Sieves 4A Beads

  • $ 9595

Bulk orders? Please contact us for Bulk Quotation.

Qty (Each) Price (Each)
1 - 4 $ 95.95
5 - 9 $ 71.95
10 - 24 $ 64.95
25 - 25+ $ 47.95

Product details:

4A molecular sieves is an alkali alumino silicate.  It is the sodium form of the Type A crystal structure. 4A molecular sieve has an effective pore opening of about 4 angstroms (0.4 nm).  4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such absorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxide and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.

Buy high quality 4A molecule sieve products at MSE Supplies for the best prices on the market. For bulk orders, please contact us for a quote. 

Molecular Sieve Product Options and Choices: 4 to 8-mesh molecular sieves are normally used in gas phase applications, while the 8 to 12-mesh type is common in liquid phase applications. The pellet forms of the 3A, 4A, 5A and 13X sieves are suitable for specialized applications.

CAS number: 70955-01

Pore Size: 4 Angstroms (0.4 nm)



Typical Chemical Formula

Na2O . Al2O3 . 2SiO2 . 4.5 H2O
SiO2 : Al2O3 ≈2




Diameter (mm)

1.7-2.5 (8~12 mesh)

3.0-5.0 (4~8 mesh)

Size ratio up to grade (%)



Bulk density (g/ml)



Wear ratio (%)



Crushing strength (N)



Static water adsorption (%)






Moisture (%)




- Drying and removing of CO2 from natural gas, LPG, air, inert and atmospheric gases, etc.
- Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia synthetic gas treating)
- Special types are used in the air break units of buses, trucks and locomotives.
- Universal drying agent in polar and nonpolar media

-Adsorbed species include SO2, CO2, H2S, C2H4, C2H6, and C3H6


1 kg/pack

Note Drying or regeneration is recommended before first use to remove the absorbed moisture and organic molecular.  Heat the molecular sieves to 200-315 °C purging with a carrier gas.