4A molecular sieve is a sodium-type aluminosilicate with an A-type crystal structure and a pore diameter of approximately 4 Å (0.4 nm),The pore opening allows molecules with a critical diameter smaller than 4 Å to enter and be adsorbed, including water, CO₂, H₂S, SO₂, methanol, ethanol, ethylene, and propylene,4A molecular sieve is one of the most widely used molecular sieve types in industry and is generally regarded as a "universal drying agent" in non-polar media.
4A molecular sieve is one of the most widely used molecular sieve types in industry and is generally regarded as a "universal drying agent" in non-polar media,removing CO₂/H₂S while adsorbing water.
Typical Applications:
Deep drying of air, natural gas, alkanes, refrigerants, and other gases and liquids.
Argon generation and purification
Dehydration agent in paints, coatings, polyesters, and dyes.
Air brake system drying for buses, trucks, and locomotives (special grades).
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PRODUCT |
4A MOLECULAR SIEVE |
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Color |
Light gray |
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Pore diameter |
4 angstroms |
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Shape |
Sphere |
Pellet |
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Diameter(mm) |
1.6-2.5 |
3.0-5.0 |
1.5-1.7 |
3.0-3.3 |
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Bulk Density (g/ml) |
≥0.70 |
≥0.70 |
≥0.68 |
≥0.68 |
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Compressive Strength(N/piece) |
≥35.0 |
≥100.0 |
≥35.0 |
≥50.0 |
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Particle Size Pass Rate (%) |
≥98.0 |
≥98.0 |
≥98.0 |
≥98.0 |
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Stabie Water Adsoption (%)(35±1)℃ Saturated Salt Water,24 hous |
≥21 |
≥21 |
≥21 |
≥21 |
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Static Ethylene Adsorption(mg/g) |
≤3.0 |
≤3.0 |
≤3.0 |
≤3.0 |
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Moisture Content(%)(550±10)℃,1 hour |
≤1.5 |
≤1.5 |
≤1.5 |
≤1.5 |
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Wear rate(%) |
≤0.2 |
≤0.2 |
≤0.2 |
≤0.2 |
Strong adsorption capacity, save customer cost
Direct supply from source manufacturers, double guarantee of quality and price
Sample testing is highly welcomed
In May 2024, South Korea Electronics Factory purchased 24tons molecular sieve for drying the gas in the workshop and Deep drying of insulating transformer oil: 3Å pores selectively adsorb H₂O via ion exchange, achieving <10 ppm moisture for high-voltage equipment.
In 2025, a Japan customer bought 5 tons molecular sieve for equipment drying, 4Å molecular sieving removes H₂O/CO₂ to <20 ppm, preventing ice formation in compressor systems at -40°C.
In 2025, a Spain customer purchased 5A molecular sieve ,5Å pores exclude C₂H₄ from C₃H₆ via kinetic diameter exclusion in PSA units. The separation effect is very good.
In July 2025, a petrochemical plant in Japan purchased 36 tons of 3A molecular sieve for drying petroleum cracking gas, and after treatment, the gas drying rate reached the target value.
In November 2023, a factory in Ethiopia purchased 4A molecular sieve for ethanol drying, and the customer feedback drying value met the ideal value.
In Oct 2025, a Colombia customer bought 10 tons 13X molecular sieve 10Å pores co-adsorb acid gases via chemisorption, reducing CO₂ for cryogenic liquefaction.
25Kg/Bag
25kg/Drum
125kg/Drum
Customized package
