SKU: MS4A005

Categories: Molecular Sieves, Type 4A

Safety Data Sheet

Product Description

Type 4A Molecular Sieve is the preferred adsorbent for static dehydration in a closed gas or liquid system. It is used as a static desiccant in household refrigerating systems, packaging of drugs, electronic components, perishable chemicals and as a water scavenger in paint and plastic systems. Also used commercially in drying saturated hydrocarbon streams. The sodium form of Zeolite.Type 4A Molecular Sieve is typically used in regenerable drying systems to remove water vapor or contaminants that have a smaller critical diameter than four angstroms.

Nominal Pore Diameter: 4
Molecules Excluded: > 4 effective diameter, e.g., propane
Base: Alumina-Silicate
Cation: Sodium

Product Attributes


1/16-in. Pellets


150 lb

Bulk Density

45 lb/ft3

Nominal Pore Size


Type of Crystal Structure

Simple Cubic

Equilibrium Water Capacity @ 25°C

22 %

Crush Strength (beads)


Heat of Adsorption (max.)

1800 BTU/lb H2O

Moisture Content as Shipped (measured @ 600°F)

<1.5 %