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69866

Sigma-Aldrich

Montmorillonite

K 10, powder

Synonym(s):

K-Catalyst

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About This Item

CAS Number:
1318-93-0
EC Number:
215-288-5
MDL number:
MFCD00132796
UNSPSC Code:
12352106
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

100

form

powder

pH

3-4

SMILES string

[Si](=O)=O.[Si](=O)=O.[Si](=O)=O.[Si](=O)=O.[Al+3].[Al+3].[O-2].[O-2].[O-2].O

InChI

1S/2Al.4O2Si.H2O.3O/c;;4*1-3-2;;;;/h;;;;;;1H2;;;/q2*+3;;;;;;3*-2

InChI key

GUJOJGAPFQRJSV-UHFFFAOYSA-N

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General description

Montmorillonite is a layered clay mineral (2:1 phyllosilicate) that belongs to a class of the smectite group. It is a naturally abundant material and is chemically modified by the cation-exchange method for the preparation of polymer nanocomposites.[1]

Application

Montmorillonite has been used as:
  • A nanofiller to improve the mechanical properties of poly(vinyl alcohol) (PVA) film for potential usage in packaging applications.[2]
  • A catalyst in the conversion of polar and non-polar algae oil lipids to biodiesel.[3]


It can also be used:
  • As a nanofiller in the preparation of biopolymer based nanocomposites.[4]
  • In the preparation of Fe3+-montmorillonite, a solid acid catalyst for the synthesis of xanthenedione derivatives.[5]

Other Notes

Solid Lewis acid catalyst[6][7]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

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
STBL1809
STBK7186
STBK5779
STBK4414
STBK2179

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Poly (vinyl alcohol): Montmorillonite: Boiled rice water (starch) blend film reinforced with silver nanoparticles; characterization and antibacterial properties.
Mathew S, et al.
Applied Clay Science, 161(1-2), 464-473 (2018)
O. Sieskind et al.
Tetrahedron Letters, 34, 1197-1197 (1993)
Conversion of polar and non-polar algae oil lipids to fatty acid methyl esters with solid acid catalysts-A model compound study.
Asikainen M, et al.
Bioresource Technology, 191(1-2), 300-305 (2015)
Thermal degradation kinetics and isoconversional analysis of biodegradable poly (3-hydroxybutyrate)/organomodified montmorillonite nanocomposites.
Achilias DS, et al.
Thermochimica Acta, 514(1-2), 58-66 (2011)
Biopolymer chitosan/montmorillonite nanocomposites: preparation and characterization.
Wang SF, et al.
Polymer Degradation and Stability, 90(1), 123-131 (2005)
View All Related Papers

Questions

1–3 of 3 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. Could you please provide me with the CEC of your montmorillonite nanoclays?

    1 answer

    1. Among the Montmorillonite products listed, there is essentially no distinction in terms of Cation Exchange Capacity (CEC, reported in terms of milliequivalents per 100 grams of material). For Montmorillonite K10 (Products 69866 and 281522), the CEC has been variously reported as either 30-40 meq/100g or just 30 meq/100g. And for Montmorillonite K30 (Prodct 69904), the CEC has been reported as 30 meq/100g.

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