... 4)CAS NO.1344-28-1 Activated Alumina Fluoride Adsorbent:Air,Gas drying,separationActivated alumina has much micro-paths, so the ... in the deep drying of cracked gas, ethylene and propylene, hydrogen-generation, air separation, instrument air drying and fluorine treatment for ... such as H2S, SO2, HF and paraffin in the water gas, especially in the drinking water defluorination..Molecular Formula: Al2O3 • ...