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307815

Sigma-Aldrich

Sodium metasilicate

Synonym(s):

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

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25 G
€55.50
1 KG
€68.90
2.5 KG
€89.30

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25 G
€55.50
1 KG
€68.90
2.5 KG
€89.30

About This Item

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

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composition

SiO2, 50-53%

Quality Level

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

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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.[1]

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.[2]

SMS can also be used:
  • To prepare NaZnSiO3OH, a novel chiral framework material which has potential application in ion exchange, adsorption and catalysis.[3]
  • As a low-cost alternative to tetraethyl orthosilicate (TEOS) to synthesize highly ordered mesoporous silicas.[4]
  • To prepare geopolymer concrete.[5]

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H290,H314,H335

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

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV2814
MKCT1110
MKCQ3811
STBK5682
MKCS5522

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Synthesis of highly ordered mesoporous silica materials using sodium silicate and amphiphilic block copolymers.
Kim J M and Stucky G D
Chemical Communications (Cambridge, England), 13, 1159-1160 (2000)
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)
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)
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
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Questions

1–4 of 4 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. Can I know the percent of Na2O in sodium metasilicate (1Kg)?

    1 answer

    1. The Na2O concentration is determined on a lot specific basis. The expected range is 49.5 - 52.5% by HCl titration. See the link below to review a sample or lot specific Certificate of Analysis:
      https://www.sigmaaldrich.com/product/aldrich/307815#product-documentation

      Helpful?

  4. Hi, may I inquire about what is the particle size range of this sodium metasilicate?

    1 answer

    1. The particle size is not determined for this product.

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