Na mmepụta na ndụ, silica gel nwere ike iji kpoo N2, ikuku, hydrogen, gas gas [1] na ihe ndị ọzọ. Dị ka acid na alkali si kwuo, enwere ike kewaa desiccant n'ime: acid desiccant, alkaline desiccant na nnọpụiche desiccant [2]. Silica gel na-egosi na ọ bụ nkụ na-anọpụ iche nke yiri ka ọ kpọrọ nkụ NH3, HCl, SO2, ...
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