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420840

Sigma-Aldrich

LUDOX® AS-40 colloidal silica

40 wt. % suspension in H2O

Sinônimo(s):

Silica preparation

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1 L
R$ 425,00
4 L
R$ 1.222,00
18 L
R$ 4.303,00

R$ 425,00

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1 L
R$ 425,00
4 L
R$ 1.222,00
18 L
R$ 4.303,00

About This Item

Fórmula linear:
SiO2
Número CAS:
7631-86-9
Peso molecular:
60.08
Número MDL:
MFCD00011232
Código UNSPSC:
12352309
ID de substância PubChem:
24866356
NACRES:
NA.22

R$ 425,00

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descrição

colloidal

Formulário

liquid

concentração

40 wt. % suspension in H2O

área da superfície

~135 m2/g

pH

9.1

densidade

1.295 g/mL at 25 °C

cadeia de caracteres SMILES

O=[Si]=O

InChI

1S/O2Si/c1-3-2

chave InChI

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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Descrição geral

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

Aplicação

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]

Informações legais

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

Código de classe de armazenamento

12 - Non Combustible Liquids

Classe de risco de água (WGK)

nwg

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

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

Escolha uma das versões mais recentes:

Certificados de análise (COA)

Lot/Batch Number
MKCX1362
MKCV5026
MKCV6403
MKCW0106
MKCT4415

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Se precisar de uma versão específica, você pode procurar um certificado específico pelo número do lote ou da remessa.

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Questions

1–2 of 2 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

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  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

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