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420875

Sigma-Aldrich

LUDOX® AM colloidal silica

30 wt. % suspension in H2O

Sinonimo/i:

Silica preparation

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About This Item

Formula condensata:
SiO2
Numero CAS:
7631-86-9
Peso molecolare:
60.08
Numero MDL:
MFCD00011232
Codice UNSPSC:
12352309
ID PubChem:
24866359
NACRES:
NA.22
Prezzi e disponibilità al momento non sono disponibili

Descrizione

colloidal

Livello qualitativo

200

Stato

liquid

Concentrazione

30 wt. % suspension in H2O

Area superficiale

198-250 m2/g

pH

8.6-9.3

Densità

1.21 g/mL at 25 °C

Stringa SMILE

O=[Si]=O

InChI

1S/O2Si/c1-3-2
VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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Descrizione generale

contains sodium stabilizing counterion.

LUDOX® AM colloidal silica consists of more condensed silicon structure and it is used in the preparation of polyaniline dispersions.[1][2]

Applicazioni

LUDOX® AM colloidal silica can be used as a source of silica for the synthesis of:
  • NaX zeolites by hydrothermal method.[3]
  • Chrysotile-type Mg3Si2O5·(OH)4 nanotubes (MgSi-NTs).[4]

It can also be used as a binder for ceramic slurries.[5]

Note legali

LUDOX is a registered trademark of W.R. Grace & Co.-Conn.

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H317,H412

Classi di pericolo

Aquatic Chronic 3 - Skin Sens. 1

Codice della classe di stoccaggio

12 - Non Combustible Liquids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Scegli una delle versioni più recenti:

Certificati d'analisi (COA)

Lot/Batch Number
STBL2267
STBL0033
STBJ6796
STBJ0495
STBH9412

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Particle morphology and chemical microstructure of colloidal silica spheres made from alkoxysilanes
Van Blaaderen
Journal of Non-Crystalline Solids, 149, 161-178 (1992)
Synthesis and catalytic activity of chrysotile-type magnesium silicate nanotubes using various silicate sources.
Lopez-Salinas E, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 274(2), 176-182 (2019)
Investigation of the Use of Various Silica Source on NaX Zeolite Properties
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Journal of Chemical and Petroleum Engineering, 50(2), 1-7 (2017)
Polyaniline dispersions. 6. Stabilization by colloidal silica particles
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Questions

1–3 of 3 Questions  

  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

      Helpful?

  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

      Helpful?

  3. What is the smallest size of the silica particles?

    1 answer

    1. The Ludox products have an average particle size range of 7nm to 22nm. Please see the Ludox product comparison table below:

      Helpful?

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