Thermo Scientific™ Molecular sieve A4 (0.4 nm, 4 Å) 4 --> 8 mesh

Thermo Scientific™ Molecular Sieve A4 is a highly efficient desiccant material designed for removing water and other impurities from liquids and gases. It has a pore size of 0.4 nm (4 Å), allowing it to selectively adsorb molecules of appropriate size, such as water, while excluding larger molecules. This product is supplied in 4–8 mesh bead form, making it ideal for applications requiring robust adsorption and easy handling.

Key Features:

1. Composition:
   • The sieve is made from synthetic zeolite, a crystalline aluminosilicate material with a uniform microporous structure.
2. Pore Size:
   • 0.4 nm (4 Å), ideal for adsorbing small molecules such as water, methanol, ethanol, and CO2.
3. Form:
   • Beige beads with uniform size for optimal adsorption efficiency.
4. Mesh Size:
   • 4–8 mesh, offering a balance of surface area and flow efficiency in adsorption processes.
5. Applications:
   • Used in gas drying, solvent drying, and separation processes.
6. High Adsorption Capacity:
   • Water adsorption capacity of ≥20%, ensuring efficient moisture removal.
7. Low Residual Water:
   • Residual water content of ≤1.5%, indicating excellent pre-use drying conditions.
8. Bulk Density:
   • 660–760 g/L, providing good packing efficiency for industrial and laboratory use.

Applications:

1. Gas Drying:

• Molecular sieve A4 is commonly used to remove moisture from gases, including air, oxygen, nitrogen, and hydrogen, in industrial and laboratory environments.

2. Solvent Drying:

• Widely used to dry solvents in chemical synthesis, particularly in processes sensitive to moisture, such as Grignard reactions.

3. Petrochemical and Refining Industries:

• Ideal for removing water from hydrocarbon streams, ethanol, and natural gas.

4. Cryogenic Processes:

• Effective in the removal of moisture from feed gases before liquefaction, ensuring process efficiency and preventing freezing.

5. Air Conditioning and Refrigeration Systems:

• Used as a desiccant in refrigeration systems to ensure the removal of water vapor and protect against freezing or corrosion.

Chemical Properties:

• Material Type: Synthetic zeolite (aluminosilicate).
• Pore Size: 0.4 nm (4 Å), suitable for small molecule adsorption.
• Water Adsorption: ≥20%, ensuring high moisture uptake.
• Residual Water Content: ≤1.5%, making it ready-to-use for drying applications.

Physical Properties:

• Appearance: Beige spherical beads.
• Bulk Density: 660–760 g/L, ensuring efficient packing.
• Mesh Size: 4–8 mesh, providing a balance between adsorption capacity and flow rate.

Handling and Storage:

• Storage Conditions:
  • Store in a cool, dry place away from moisture to maintain activity.
• Reactivation:
  • The molecular sieve can be reactivated by heating at 200–300°C to remove adsorbed moisture.
• Compatibility:
  • Avoid contact with strong acids or bases to maintain structural integrity.

Packaging Options:

• 500 g Pack: Catalog No. ACRO197265000
• 5 kg Pack: Catalog No. ACRO197260050

Key Benefits:

1. High Moisture Removal: Adsorbs up to 20% of its weight in water, ensuring optimal drying performance.
2. Selective Adsorption: Removes water and small polar molecules without affecting larger molecules.
3. Reusable: Can be regenerated through heating for multiple uses.
4. Versatile: Suitable for industrial, laboratory, and household applications.
5. Efficient Packing: Uniform bead size ensures consistent flow rates and adsorption efficiency.

Typical Use Cases:

1. Drying Compressed Air:
   • Removes water vapor to prevent corrosion and freezing in compressed air systems.
2. Drying Organic Solvents:
   • Used in labs and industries to dry alcohols, ethers, and hydrocarbons.
3. Natural Gas Processing:
   • Removes moisture before liquefaction or pipeline transport.
4. Cryogenic Systems:
   • Ensures moisture-free feed gases for efficient cooling and liquefaction.
5. Chemical Synthesis:
   • Protects sensitive reactions from water interference, enhancing yield and purity.

Thermo Scientific™ Molecular Sieve A4 is a highly reliable and versatile product for removing moisture and small molecules in a variety of industrial and laboratory settings.