1.05741
Molecular sieve 0.3 nm
rods ~ 1.6 mm (1/16")
Synonym(s):
Molecular sieve 0.3 nm, Sodium aluminium silicate
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About This Item
CAS Number:
MDL number:
UNSPSC Code:
41123003
NACRES:
NB.21
EC Index Number:
215-283-8
Quality Segment
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
SMILES string
[Si](=O)=O.[Al](=O)O[Al]=O
InChI
1S/2Al.O2Si.3O/c;;1-3-2;;;
InChI key
HNPSIPDUKPIQMN-UHFFFAOYSA-N
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
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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