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307815

Sodium metasilicate

Synonym(s):

Disodium metasilicate, Disodium silicate, Sodium silicate, Sodium silicon oxide

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About This Item

Linear Formula:
Na2SiO3
CAS Number:
6834-92-0
Molecular Weight:
122.06
NACRES:
NA.22
PubChem Substance ID:
24858628
UNSPSC Code:
12352302
EC Number:
229-912-9
MDL number:
MFCD00003492
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composition

SiO2, 50-53%

Quality Segment

200

SMILES string

[Na+].[Na+].[O-][Si]([O-])=O

InChI

1S/2Na.O3Si/c;;1-4(2)3/q2*+1;-2

InChI key

NTHWMYGWWRZVTN-UHFFFAOYSA-N

General description

SMS is a silicon source for silica materials and can be used as a chemical intermediate for silica gel catalysts.

Application

Reactant for:
  • Hydrothermal preparation of thorium uranium silicate (Th1-xUxSiO4) uranothorite solid solutions
  • Fabrication of dense NaA zeolite coatings
  • Reactant for preparation of tungsten modified silica as catalyst for liquid phase oxidation of styrene
Sodium metasilicate (SMS) has been used in the preparation of polypyrrole/sodium metasilicate (PPy/Na2SiO3) and polythiophene/sodium metasilicate (PT/Na2SiO3) composites, novel high dielectric constant materials for use in power electronic systems.

SMS can also be used:
  • To prepare NaZnSiO3OH, a novel chiral framework material which has potential application in ion exchange, adsorption and catalysis.
  • As a low-cost alternative to tetraethyl orthosilicate (TEOS) to synthesize highly ordered mesoporous silicas.
  • To prepare geopolymer concrete.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - STOT SE 3

target_organs

Respiratory system

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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