Thermo Scientific™ Molecular sieve 3A (0.3 nm, 3 Å) 8-12 mesh

Thermo Scientific™ Molecular Sieve 3A (0.3 nm, 3 Å) is a highly efficient desiccant designed to adsorb water and other small molecules while leaving larger molecules unaffected. This makes it ideal for applications requiring selective moisture removal without interfering with other components. The 3A molecular sieve has a pore size of 3 Å (0.3 nm), specifically engineered for adsorbing water molecules while excluding molecules larger than 3 Å, such as hydrocarbons or methanol.

Chemical Composition:

• Synonyms: Molecular sieve 0.3 nm, 3A molecular sieve, Molecular sieve A3, Linde 3A, Sodium aluminum silicate.
• Formula: KnNa₁₂-n[(AlO₂)₁₂(SiO₂)₁₂]·xH₂O.
• CAS Number: 308080-99-1.
• MDL Number: MFCD00131613.

Physical Properties:

• Appearance: Beige to light brown beads.
• Particle Size: 8 to 12 mesh (approx. 2.38–1.68 mm).
• Bulk Density: ≥600 g/L.
• Residual Water: ≤1.5%.
• Water Adsorption: ≥20% at 60% relative humidity.

Key Features:

• Selective Adsorption: Removes water while excluding larger molecules, making it suitable for drying hydrocarbons, alcohols, and gases.
• Efficient Desiccant: High adsorption capacity ensures rapid and effective moisture removal.
• Durable Material: Resistant to degradation under normal usage conditions.
• Insoluble in Water: Ensures consistent performance in wet environments.
• Reusable: Can be regenerated through heating to drive off absorbed water.

Applications:

1. Gas Drying:
   • Ideal for removing water vapor from industrial gases such as natural gas, hydrogen, nitrogen, and carbon dioxide.
2. Solvent Drying:
   • Frequently used for drying ethanol, methanol, and other alcohols.
3. Petrochemical Industry:
   • Removes moisture from hydrocarbon streams.
4. Pharmaceutical Applications:
   • Used in chemical synthesis where water-free conditions are required.
5. Compressed Air Systems:
   • Ensures dry air in industrial and pneumatic systems.
6. Cryogenic Applications:
   • Essential for drying feed gases before cryogenic processing to prevent ice formation.
7. Chemical and Laboratory Use:
   • Creates anhydrous conditions for reactions sensitive to moisture.

Regeneration and Storage:

• Regeneration:
  • The molecular sieve can be regenerated by heating it at 200–300°C in a vacuum or with dry gas to remove absorbed moisture.
• Storage:
  • Store in a cool, dry place in a sealed container to maintain activity. Avoid prolonged exposure to open air to prevent moisture adsorption.

Specifications:

• Pore Size: 3 Å (0.3 nm).
• Operating Temperature: Ambient.
• Moisture Holding Capacity: ≥20% by weight.
• Durability: Suitable for repeated use and regeneration.

Packaging and Availability:

• Available Sizes:
  • 500 g (Catalog Number: ACRO197255000).
  • 5 kg (Catalog Number: ACRO197250050).
  • 25 kg (Catalog Number: ACRO197250250).
• Packaging Type: Sealed glass bottles or durable bags, depending on quantity.

Advantages of 3A Molecular Sieve:

• Ensures moisture-free environments in various industrial and laboratory applications.
• Highly specific adsorption, minimizing loss of other valuable materials.
• Durable and reusable, reducing operational costs.
• Environmentally friendly, as it is non-toxic and easily regenerated.

Important Notes:

• Compatibility: Avoid using with strong oxidizing agents as it can degrade the material.
• Safety: Handle with gloves and protective equipment in industrial settings to avoid dust exposure.

Thermo Scientific™ Molecular Sieve 3A is a reliable solution for achieving ultra-dry conditions, ensuring optimal performance in critical moisture-sensitive processes.