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420824

Sigma-Aldrich

LUDOX® HS-30 kolloidales Siliziumdioxid

30 wt. % suspension in H2O

Synonym(e):

Kieselgel Zubereitung

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1 L
€ 60,10
4 L
€ 97,50

€ 60,10

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1 L
€ 60,10
4 L
€ 97,50

About This Item

Lineare Formel:
SiO2
CAS-Nummer:
7631-86-9
Molekulargewicht:
60.08
MDL-Nummer:
MFCD00011232
UNSPSC-Code:
12352309
PubChem Substanz-ID:
24866354
NACRES:
NA.22

€ 60,10

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Beschreibung

colloidal

Qualitätsniveau

100

Form

liquid

Konzentration

30 wt. % suspension in H2O

Oberflächenbereich

~220 m2/g

pH-Wert

9.8

Dichte

1.21 g/mL at 25 °C

Lagertemp.

room temp

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 the dispersion of monodispersed colloidal silica particles having the size smaller than 100 nm.[1] It contains sodium stabilizing counterion.

Anwendung

LUDOX® HS-40 colloidal silica can be used:
  • For the synthesis of polymer–inorganic nanocomposites by directional freezing.[2]
  • To synthesize colloidal suspensions of zeolite Y[3] and zeolite A nanocrystals by hydrothermal method.[4]
  • As a model for colloidal silica foulants to study the membrane fouling.[5]

Rechtliche Hinweise

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

Lagerklassenschlüssel

10 - 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
MKCT6178
MKCL9013
MKCL5253
MKCK2461
MKCJ9377

Die passende Version wird nicht angezeigt?

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

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

Die Dokumentenbibliothek aufrufen

Influence of membrane and colloid characteristics on fouling of nanofiltration membranes.
Boussu K, et al.
Journal of Membrane Science , 289(1-2), 220-230 (2007)
Aligned two-and three-dimensional structures by directional freezing of polymers and nanoparticles.
Zhang H, et al.
Testing, 4(10), 787-787 (2005)
Homogeneous polymer-zeolite nanocomposite membranes by incorporating dispersible template-removed zeolite nanocrystals.
Wang H, et al.
Journal of Materials Chemistry, 12(12), 3640-3643 (2002)
High silica zeolite Y nanocrystals by dealumination and direct synthesis.
Holmberg BA, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 74(1-3), 189-198 (2004)
Mechanisms underlying the effects of membrane fouling on the nanofiltration of trace organic contaminants.
Nghiem LD, et al.
Desalination, 250(2), 682-687 (2010)
Alle zugehörigen Dokumente anzeigen

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

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  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. 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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