... adsorption properties; used widely in industry 1. Performance characteristics:4A molecular sieve's aperture is 4A,it adsorbs water, methanol, ... , carbon dioxide, ethylene, propylene, and does not adsorb any molecular larger than 4A(including propane), the choice to water adsorption ... foil bags of vacuum-packed 6.Notes: Before use molecular sieve should prevent pre-adsorbed water, organic gases or ...