Grade: 3A, 4A, 5A, 13X Purpose: insulating glass dryer, air separation, automobiles, refrigerant Molecular SieveMolecular sieves are a variety of ... sieving. Therefore, this aluminium-silicate is called a molecular sieve. Mixtures of gases or compounds that flow through the ... the the following properties of the adsorbate (1) Molecular size(2) Molecular polarity(3) Degree ofsaturation of the molecule (4 ...