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420816

Sigma-Aldrich

LUDOX® HS-40 kolloidales Siliziumdioxid

40 wt. % suspension in H2O

Synonym(e):

Kieselgel Zubereitung

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About This Item

Lineare Formel:
SiO2
CAS-Nummer:
7631-86-9
Molekulargewicht:
60.08
MDL-Nummer:
MFCD00011232
UNSPSC-Code:
12352309
PubChem Substanz-ID:
24866353
NACRES:
NA.22
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Beschreibung

colloidal

Qualitätsniveau

100

Form

viscous liquid

Konzentration

40 wt. % suspension in H2O

Oberflächenbereich

~220 m2/g

pH-Wert

9.8

Dichte

1.3 g/mL at 25 °C

SMILES String

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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Allgemeine Beschreibung

LUDOX® HS-40 colloidal silica is used as a silicon (Si) source in the synthesis of zeolites,[1] sulphate sodalite, and aluminosilicate gels.[2]

Anwendung

LUDOX® HS-40 colloidal silica is utilized:
  • As a template for generating mesopores[3]
  • As an excellent binder that binds catalyst components together and provides high mechanical strength without changing catalytic properties[4]
  • As a substrate to enhance substrate adhesion in zeolites[5]
  • In the preparation of nitrogen-doped carbon (NMC), which serves as catalyst support[6]

Rechtliche Hinweise

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

Lagerklassenschlüssel

12 - Non Combustible Liquids

WGK

nwg

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

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

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
SDBB3181
SDBB2068
STBK9021
STBK8909
STBK7723

Die passende Version wird nicht angezeigt?

Wenn Sie eine bestimmte Version benötigen, können Sie anhand der Lot- oder Chargennummer nach einem spezifischen Zertifikat suchen.

Suche nach COA

Besitzen Sie dieses Produkt bereits?

In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.

Die Dokumentenbibliothek aufrufen

Optimization of process parameters on the extrusion of honeycomb shaped monolith of H-ZSM-5 zeolite
A Aranzabal, et al.
Chemical Engineering Journal, 162, 415-423 (2010)
Low temperature heat capacity and thermodynamic functions of anion bearing sodalites Na8Al6Si6O24X2 (X= SO4, ReO4, Cl, I)
J Schliesser, et al.
The Journal of Chemical Thermodynamics, 114, 14-24 (2017)
The effects of gel aging on the synthesis of NaY zeolite from colloidal silica.
Ginter D M, et al.
Zeolites, 12(6), 742-749 (1992)
Synthesis of zeolite L. Tuning size and morphology.
Ruiz A Z, et al.
Monatshefte fur Chemie / Chemical Monthly, 136(1), 77-89 (2005)
Hydrogen production from formic acid dehydrogenation over a Pd supported on N-doped mesoporous carbon catalyst: A role of nitrogen dopant
Y Kim, et al.
Applied Catalysis A: General, 608, 117887-117887 (2020)
Alle zugehörigen Dokumente anzeigen

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:

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