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The pore size for 4A molecular sieve is 4A. It is mainly used to adsorb water, methanol, ethanol, sulfureted hydrogen, carbon dioxide, ethylene, propylene, does not adsorb any larger molecular than 4A, and often used as desiccant in industrials.


Formula: Na2O·Al2O3·2.0SiO2·4.5H2O


paraffin oil drying

arene drying

liquid hydrocarbon drying

natural gas drying, disengage CO2

liquefied petroleum gas drying

cracked gas disengage CO2

ammonia synthesis and recycle gas drying and cleaning

impregnant drying

coolant drying

coolant drying

hydrogen gas drying, depurate

rare gas drying

meter drying