Adsorbent SORBEO MS3 is a highly porous, crystalline alumino silicate in beaded form. The pore openings in the crystals have a diameter of approximately 3 Å. Adsorbent has been specially designated for drying of ethylene in cracked gas units. Also, propylene, butadiene and other unsaturated hydrocarbons are dried using this molecular sieve. Adsorbent is also used in drying of gases containing H₂S and CO₂ where COS formation has to be minimized.