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Quality Level
form
rod
surface area
800 m2/g
loss
≤10% loss on ignition, 950°C
particle size
~1.6 mm
pore size
0.3 nm
pH
8-11 ( in H2O)
mp
>1600 °C
bulk density
700‑750 kg/m3
storage temp.
no temp limit
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 %
Loss on ignition (950 °C): ≤ 10 %
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 15 %
Storage Class Code
13 - Non Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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