Merck, 1057411000, Molecular sieve 0.3 nm

General description
Molecular sieves are crystalline, synthetic zeolites. Their crystal gratings are similar to a cage with numerous hollow spaces. The cavities are accessible from all sides by pores of exactly defined dimensions.
Application
Molecular sieves can be used:
in desiccators and drying tubes
for keeping absolute solvents dry
for drying gases or solvents in drying columns
for selective adsorption

Features and Benefits
Easy to use: practically chemically inert, non-toxic, no disposal problems, dried liquids can be decanted
High adsorption capacity even with a low water content of the substance to be dried
High adsorption capacity even at high temperatures
High adsorption affinity for polar and unsaturated organic molecules (however, H2O is always preferentially adsorbed)
Selective adsorption: only molecules that can pass through the pores are adsorbed

Analysis Note
Identity: conforms
Loss on ignition (950 °C): ≤ 10 %
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 15 %