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420824

Sigma-Aldrich

LUDOX® HS-30 colloidal silica

30 wt. % suspension in H2O

Sinonimo/i:

Silica preparation

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1 L
CHF 45.80
4 L
CHF 117.00

CHF 45.80

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1 L
CHF 45.80
4 L
CHF 117.00

About This Item

Formula condensata:
SiO2
Numero CAS:
7631-86-9
Peso molecolare:
60.08
Numero MDL:
MFCD00011232
Codice UNSPSC:
12352309
ID PubChem:
24866354
NACRES:
NA.22

CHF 45.80

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Descrizione

colloidal

Livello qualitativo

100

Stato

liquid

Concentrazione

30 wt. % suspension in H2O

Area superficiale

~220 m2/g

pH

9.8

Densità

1.21 g/mL at 25 °C

Temperatura di conservazione

room temp

Stringa SMILE

O=[Si]=O

InChI

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

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Descrizione generale

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.

Applicazioni

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]

Note legali

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

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

nwg

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

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

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Certificati d'analisi (COA)

Lot/Batch Number
MKCT6178
MKCL9013
MKCL5253
MKCK2461
MKCJ9377

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Sodium aluminate technical

Sigma-Aldrich

13404

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Sigma-Aldrich

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Sodium silicate solution reagent grade

Sigma-Aldrich

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Sodium silicate solution

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)
Visualizza tutti i documenti correlati

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. 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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