4A Blue Indicating Molecular Sieve Desiccant

is a sodium alumina silicate molecular sieve injected with an inorganic metal salt moisture indicator. The desiccant is known to act as a molecular sieve with the bonus ability to tell visually when the molecular sieve achieves saturation.  When active, the molecular sieve beads are blue.  Then beads arrive at saturation, the color changes to beige demonstrating that the molecular sieve has reached equilibrium capacity and is then in need of replacement.

4a blue indicating molecular sieve desiccant will not adsorb any molecules larger than 4A or 4 angstrom that are the sodium forms of the Type A crystal structure. The rate of adsorption is argon, krypton, xenon, ammonia, carbon monoxide, C2H4, C2H2, CH3OH, C2H5OH, CH3CN2, CS2, CH3CL, CH3Br, and carbon dioxide.

4A Blue Indicating molecular sieve must be stored in an air tight, dry place to avert early water adsorption. Reseal packages after opening to put off unintended water adsorption and contamination. We recommend that you use oldest material first.

Mole Sieve is one of the most reliable desiccants for a variety of applications including:

  • Highly polar compounds, such as methanol and ethanol can be dehydrated.
  • Removes moisture in PU Plastic or Paint
  • Dries Natural Gas, Cracked Gas
  • Drying Refrigerant
  • Static drying for insulated glass units, air filled or gas-filled.
  • Unsaturated hydrocarbons dehydrated (e.g. ethylene, propylene, butadiene)

SDS and Spec Sheets