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22141 Sigma-Aldrich

Celite® 545 AW

filter aid, acid washed, treated with sodium carbonate, flux calcined

Synonym: Diatomaceous earth, flux-calcined

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Properties

Related Categories Adsorbents, Filter Aids and Drying Agents, Diatomaceous Earth, Essential Chemicals, Research Essentials
InChI Key   VYPSYNLAJGMNEJ-UHFFFAOYSA-N
quality   acid washed
  flux calcined
  treated with sodium carbonate
composition   Al2O3, 4.0%
  CaO, 0.5%
  Fe2O3, 1.3%
  Na2O + K2O, 3.3%
  SiO2, 89.5%
loss   ~0.3% loss on ignition, 900 °C
particle size   ≤113 μm (82% (acc. to Cilas))
pH   <7 (25 °C, 10% in aq. suspension)

Description

General description

Diatomaceous earth is made up of natural amorphous silica formed from the fossilized skeletons of diatoms. It is extracted, crushed, dried and calcined with flux material. DE is widely used as filler in construction materials, paints and as an anti-caking agent for agricultural chemicals. It has high water and oil absorption ability.

Application

Diatomaceous earth may be used as an adsorbent for column chromatography.

Packaging

25, 100 g in poly bottle

Caution

Not Intended for cGMP Parenteral Pharmaceutical Manufacturing

Legal Information

Celite is a registered trademark of Imerys Minerals California, Inc.

Safety & Documentation

Safety Information

Symbol 
GHS08  GHS08
Signal word 
Warning
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles
Peer-Reviewed Papers
15

References

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