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420840

Sigma-Aldrich

LUDOX® AS-40 colloidal silica

40 wt. % suspension in H2O

Sinonimo/i:

Silica preparation

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1 L
59,90 €
4 L
135,00 €

59,90 €

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1 L
59,90 €
4 L
135,00 €

About This Item

Formula condensata:
SiO2
Numero CAS:
7631-86-9
Peso molecolare:
60.08
Numero MDL:
MFCD00011232
Codice UNSPSC:
12352309
ID PubChem:
24866356
NACRES:
NA.22

59,90 €

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Richiedi un ordine bulk

Descrizione

colloidal

Livello qualitativo

200

Stato

liquid

Concentrazione

40 wt. % suspension in H2O

Area superficiale

~135 m2/g

pH

9.1

Densità

1.295 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

LUDOX®  AS-40 colloidal silica is used as a silica source in the preparation of zeolites.[1]

Applicazioni

Ludox AS-40 is used as:
  • A filler material in the nanocomposite Nafion films[2]
  • A precursor in the synthesis of micro-mesoporous carbon spheres[3]

Note legali

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

Codice della classe di stoccaggio

12 - Non 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
MKCX1362
MKCV6403
MKCV5026
MKCW0106
MKCT4415

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Separation of water?acetic acid mixtures by pervaporation using a thin mordenite membrane.
Li G, et al.
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Domande

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 risposta

    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

      Utile?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 risposta

    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

      Utile?

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