4dgA Molecular Sieve Adsorbent is a clay-bound sodium form of Type A molecular sieve. 4A molecular sieve will adsorb molecules with critical diameters up to 4 angstroms. It adsorbs water and ethanol, but not larger molecules like propane. APPLICATIONS Deep drying of gases and liquids, such as natural gas alkane, air, carbon dioxide etc. Static drying for electronic component and hygroscopic substance Dehydration of coating and polyester etc.