Description

Molecular Sieve 3A is a synthetic zeolite with a precise pore size of 3 angstroms, designed for the selective adsorption of water molecules while excluding larger molecules. This property makes it an indispensable desiccant for critical drying applications where maintaining ultra-low moisture levels is essential for product quality and process efficiency. It is a key component for industries requiring stringent moisture control, including petrochemical refining, natural gas processing, and the production of insulated glass and plastics.

Application

• Insulating Glass Desiccant: Primary drying agent in double-pane and triple-pane insulating glass units to prevent internal fogging and condensation.
• Petrochemical & Refining: Deep dehydration of cracked gas, ethylene, propylene, and other light hydrocarbon streams to prevent ice formation and corrosion in pipelines.
• Natural Gas Drying: Removal of water vapor from natural gas to meet pipeline specifications and prevent hydrate formation.
• Polymer Industry: Drying of monomer feeds (e.g., ethylene, propylene) and solvents to prevent catalyst poisoning and ensure polymer quality.
• Refrigerant Drying: Protection of refrigeration systems by removing moisture from refrigerants like R-134a and R-410a.
• Ethanol Dehydration: Used in pressure swing adsorption (PSA) systems to produce fuel-grade anhydrous ethanol.
• Static Drying: Protection of sensitive electronic components, pharmaceuticals, and packaged goods within sealed environments.

Basic Information

Product Name	Molecular Sieve 3A
CAS No.	308080-99-1
Molecular Formula	K12Na12[(AlO2)48(SiO2)108]·xH2O
Molecular Weight (Anhydrous Basis)	~ 10,000 (Framework only, variable)
Synonyms	Zeolite 3A; Potassium Sodium Aluminosilicate; 3 Angstrom Molecular Sieve; Type 3A Zeolite; KA Zeolite; Desiccant 3A; KNaA Zeolite; Adsorbent 3A; LTA Zeolite (Linde Type A); Drying Beads 3A
EINECS	Contact for details

Quality Control

Our Molecular Sieve 3A is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key performance indicators including static water adsorption capacity, crush strength, bead size distribution, and bulk density to ensure consistent and reliable performance. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive) and must be stored in a cool, dry, and well-ventilated area. Keep the original container tightly sealed when not in use to prevent premature adsorption of atmospheric moisture, which reduces effective capacity. Store away from strong acids.

Specification

Item	Specification
Form	Spherical Beads or Pellets
Pore Size	3 Ångstroms
Static H2O Adsorption (wt%, RH 10%, 25°C)	≥ 20%
Bulk Density (g/ml)	0.64 - 0.72
Crush Strength (N/bead)	≥ 30
Size Range (Mesh)	4-8, 8-12, 1/16", 1/8" or Custom
Loss on Ignition (LOI) (wt%, 950°C)	≤ 1.5
pH (5% slurry)	9.0 - 11.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.