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Sigma-Aldrich

Diatomaceous earth

Synonym(s):

Diatomaceous earth, flux-calcined

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About This Item

CAS Number:
68855-54-9
MDL number:
MFCD00132803
UNSPSC Code:
11101527
PubChem Substance ID:
329755685
NACRES:
NA.21

form

powder

particle size

150 mesh (<=12%, Tyler sieve retain)

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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General description

Diatomaceous earth is natural amorphous silica formed from the fossilized skeletons of diatoms. It has high water and oil absorption ability. The potential toxicity of different samples of DE has been assessed.

Application

Diatomaceous earth may be used as an adsorbent for column chromatography.
It may be used in the synthesis of the following:
  • Chitosan modified DE for the abstraction of humic acid from raw water.
  • High purity solar grade silicon (SOG-Si).
  • Porous silica ceramics.
  • Diatomite-based composite with enhanced sorption characteristics.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H372

Precautionary Statements

P260 - P264 - P270 - P314 - P501

Hazard Classifications

STOT RE 1 Inhalation

Target Organs

Lungs

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Porous ceramic monoliths based on diatomite.
Saponjic A, et al.
Ceramics International, 41(8), 9745-9752 (2015)
Preparation of novel diatomite-based composites: applications in organic ef?uents sorption.
Khelifa N, et al.
Desalination and Water Treatment, 1-10 (2015)
High purity silicon materials prepared through wet-chemical and electrochemical approaches.
Homma T, et al.
Electrochimica Acta, 179, 512-518 (2015)
Study on Adsorption Removal of Humic Acid in Water by Modified Clays.
Wang YH, et al.
Applied Mechanics and Materials, 707, 247-250 (2015)
The global variability of diatomaceous earth toxicity: a physicochemical and in vitro investigation.
Nattrass C, et al.
Journal of Occupational Medicine and Toxicology (London, England), 10(1), 23-23 (2015)
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