3A Molecular Sieve is primarily used for removing moisture from liquids and gases. The advantages of 3A molecular sieve is consistent adsorption speed and higher contamination resistance, increasing cyclic times that provide an extended product life. Its pore size of 3A means any molecule larger than 3 angstroms will not be adsorbed. 

The 3A pore opening will allow moisture to be adsorbed but will exclude unsaturated hydrocarbons (e.g. ethylene, propylene, butadiene) and highly polar alcohols such as methanol and ethanol.

It has become one of the most reliable desiccants for a variety of applications including:

  • Refrigerant Drying
  • Moisture removal in PU Plastic or Paint
  • Natural Gas Drying
  • Drying Cracked Gas
  • Static drying of insulating glass units, whether air filled or gas-filled
  • Dehydration of highly polar compounds, such as methanol and ethanol
  • Dehydration of unsaturated hydrocarbons (e.g. ethylene, propylene, butadiene)
Brand Desicco
Desiccant Alkali metal alumino-silicate
Type Potassium form of the Type A crystal structure (3A)
Dimensions 8x12 Mesh; 1.6-2.5mm Bead Size
RH Levels Lowers to 0-10% RH
Shelf Life 2 years in original (unopened) packaging

Static Water Absorption ≥20%
Crushing Strength ≥30N/pc
Bulk Density ≥0.7g/ml
Wear Ratio ≤0.2%
Sequence Rate Helium, neon, nitrogen and water