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
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
Substances Subject to be Indicated Names
ishl_indicated
Substances Subject to be Notified Names
ishl_notified
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