Sigma-Aldrich® Molecular Sieve Type 4 A 8-12 Mesh Beads

Molecular sieves, 4 Å may be used in the following processes:

• Static dehydration in closed liquid or gas systems such as in packaging of drugs, electric components and perishable chemicals.
• Water scavenging in printing and plastics systems.
• Drying saturated hydrocarbon streams by adsorbing gases such as sulfur dioxide, carbon dioxide, hydrogen sulfide, ethene, ethane and propene.

The product (Molecular sieves, 4 Å) has been used for the removal of all traces of water from various solvents (methanol, methanol-acetone and acetone). Also, they have been used for drying during the preparation of solutions of N-hydroxysuccinimide (NHS) and biotin-NHS esters (1gL-1) in dried ACN (acetonitrile).

• SDS /ASSETS/DOCUMENTS/ITEMS/EN/208604SDS.pdf
• Spec Sheet /ASSETS/DOCUMENTS/ITEMS/EN/208604Spec.pdf