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307815

Sigma-Aldrich

Sodium metasilicate

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Synonym(s):
Disodium metasilicate, Disodium silicate, Sodium silicate, Sodium silicon oxide
Linear Formula:
Na2SiO3
CAS Number:
Molecular Weight:
122.06
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

composition

SiO2, 50-53%

Quality Level

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

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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

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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A Comparative Study on Strength Improvement of Concrete by Using Fly Ash Based Geopolymer.
Anand A, et al.
International Research Journal of Engineering and Technology (IRJET), 5(4), 4819-4821 (2018)
J Najda et al.
Biological trace element research, 42(1), 63-70 (1994-07-01)
The effect of an excessive inorganic silicon oral intake on the activity of basic antioxidant enzymes was studied in rats. Activities of superoxide dismutase, catalase, and glutathione peroxidase were measured in liver and kidney tissues of animals receiving per os
Highly porous silica networks derived from gelatin/siloxane hybrids prepared starting from sodium metasilicate
Retuert J, et al.
Journal of Non-Crystalline Solids, 347(1-3), 273-278 (2004)
C D Seaborn et al.
Biological trace element research, 89(3), 239-250 (2002-12-05)
Both arginine and silicon affect collagen formation and bone mineralization. Thus, an experiment was designed to determine if dietary arginine would alter the effect of dietary silicon on bone mineralization and vice versa. Male weanling Sprague-Dawley rats were assigned to
N A Karrow et al.
American journal of contact dermatitis : official journal of the American Contact Dermatitis Society, 13(3), 133-139 (2002-08-08)
Sodium metasilicate (SMS) is a key ingredient for a number of industrial and consumer products. Although little is known about potential for this chemical to cause allergic reactions, a similar silicate compound, sodium silicate, was reported to elicit IgE-mediated contact

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