Molecular Sieve 4A

Molecular Sieve 4A

Molecular sieve 4A is the most frequently used zeolite for drying air. This type A desiccant has 1x n modules, which means that these zeolites have the highest polarity and preferably exclude water.These are synthetically produced aluminosilicates. Zeolites of type 4A contain sodium in their crystal lattice (Na12[(AlO2)12(SiO2)12]), the resulting pore diameter is approx. 0.42 nm. This constant structure results in a very high inner surface area of up to 1000m²/g. Together with their high electrostatic adsorption forces, these molecular sieves are therefore ideal for air drying.

Molecular sieves achieve a high absorption capacity even at low relative humidity. Thus they are able to dry the supply air very strongly. This makes it useful wherever the degree of drying is a decisive selection criterion. The maximum water absorption in a fully saturated environment is about 23%. There is no colour indicator to indicate the loading condition.



Chemical Composition: Sodium-Aluminium-Silicate

CAS number: 1318-02-1

Structure A
cations Na+
Tatsächliche Porengröße 0,42 nm
Effective pore size 0,42 nm
Appearance and shape Beige, solid balls
particle size 3 - 5 mm
bulk density 0,67 kg/l
pore volume 0,35 - 0,70 ml/g
breaking strength > 80 N
Specific surface 500 - 1000 m²/g
575°C Loss on ignition < 1,5 %
Abriebrrate of abrasionate < 0,25 %
water absorption capacity > 230 ml/kg


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Molecular sieve 4A 20 kg

Product no.: 35.0500.00

119.00 *
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In stock
Delivery weight: 20 kg

Molecular sieve 4A 3,5 kg

Product no.: 35.0505.00

29.00 *
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In stock
Delivery weight: 4 kg

Molecular sieve 4A 22 kg

Product no.: 35.0506.00

149.00 *
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Delivery weight: 24 kg

Molecular sieve 4A 45 kg

Product no.: 35.0507.00

299.00 *
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In stock
Delivery weight: 47 kg


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