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71746

Sigma-Aldrich

Sodium metasilicate pentahydrate

≥95.0% (T)

Synonym(s):

Disodium silicate pentahydrate, Sodium silicate hydrate, Uniflo 26

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$34.40
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250 G
$34.40
1 KG
$70.90

About This Item

Linear Formula:
Na2SiO3 · 5H2O
CAS Number:
10213-79-3
Molecular Weight:
212.14
EC Number:
229-912-9
MDL number:
MFCD00149176
UNSPSC Code:
12352302
PubChem Substance ID:
57652358
NACRES:
NA.22
assay:
≥95.0% (T)
grade:
for analytical purposes
form:
beads

$34.40

Available to ship onApril 18, 2025Details

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grade

for analytical purposes

Quality Level

200

assay

≥95.0% (T)

form

beads

SMILES string

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

InChI

1S/2Na.O3Si.5H2O/c;;1-4(2)3;;;;;/h;;;5*1H2/q2*+1;-2;;;;;

InChI key

ADPGKKZKGXANON-UHFFFAOYSA-N

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Application

Sodium metasilicate pentahydrate can be used:
  • As a silicate electrolyte in plasma electrolytic oxidation (PEO) coating.[1]
  • For the synthesis of sintered mullite ceramics (3Al2O3·2SiO2) by the co-precipitation method.[2]
  • As a source of silica for the synthesis of silica-zirconia composites for the chromatographic applications.[3]
  • For the synthesis of photo-Fenton catalyst, nontronite, for the degradation of Rhodamine B.[4]
  • As a starting material for the synthesis of zeolite NaA layers on α-Al2O3 supports.[5]

pictograms

CorrosionExclamation mark
GHS05,GHS07

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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_germany

WGK 1

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM6208
BCCK3586
BCCJ8249
BCCH3929
BCCG2817

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Layer development and growth history of polycrystalline zeolite A membranes synthesised from a clear solution.
Zah J, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 93(1-3), 141-150 (2006)
Characterization of AZ31 Mg Alloy coated by plasma electrolytic oxidation.
Durdu S, et al.
Vacuum, 88, 130-133 (2013)
A sol-gel preparation of silica coated zirconia microspheres as chromatographic support materials.
Shalliker RA, et al.
J. Mater. Sci., 32(11), 2949-2955 (1997)
A novel photosensitized Fenton reaction catalyzed by sandwiched iron in synthetic nontronite.
Liu R, et al.
Royal Society of Chemistry Advances, 4(25), 12958-12963 (2014)
Mechanical, morphological and dielectric properties of sintered mullite ceramics at two different heating rates prepared from alkaline monophasic salts.
Sanad MMS, et al.
Ceramics International, 39(2), 1547-1554 (2013)
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Questions

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  1. 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

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  2. 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

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