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5A Molecular Sieve

5A molecular sieve is a kind of calcium form of the crystal structure. It is the calcium form of the Type-A crystal structure with an effective pore opening of 5A. 5A molecular sieve will adsorb molecules with criticaldiameters up to 5 angstroms.

The common application of 5A molecular sieve is to separate the normal and isomerous alkane, to adsorb moisture, humidity and carbon dioxide, to adsorb pressure swing for gases. And it can also be used to check the exact composition through large volume density, water content, strength, and several other chemical specifications.


Alfa Chemistry 5A molecular sieve is commonly used in:

  • Normal paraffin separating process
  • Drying and Separation of aromatics
  • Refining SF6 refrigerant for power (removing moisture and hydrocarbon)
  • Oxygen/hydrogen PSA (Pressure Swing Adsorption) process
  • Nitrogen and oxygen separation, separation of nitrogen and hydrogen, and preparation of oxygen, nitrogen and hydrogen
  • Natural gas drying, desulfurization, decarbonation

Technical Parameter

Catalog No.MS5A-1MS5A-2MS5A-3MS5A-4
Bulk density (g/ml)≥0.70≥0.70≥0.65≥0.65
Wear ratio (%)≤0.2≤0.2≤0.2≤0.4
Crushing strength (N)≥30/piece≥60/piece≥30/cm≥45/cm
Static H2O adsorption (25°C, %)≥22≥22≥22≥22
Water content (%)≤1.5≤1.5≤1.5≤1.5

We manufacture 5A molecular sieves for various applications. To place an order or request a quote, please don't hesitate to contact us.

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