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901019

Sigma-Aldrich

Carbon nanotube, multi-walled

50-90 nm diameter, >95% carbon basis

Synonyme(s) :

MWCNT, MWNT, Multiwall carbon nanotube

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25 G
367,00 €

367,00 €

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25 G
367,00 €

About This Item

Numéro CAS:
308068-56-6
Numéro MDL:
MFCD00133992
Code UNSPSC :
12352103
Nomenclature NACRES :
NA.23

367,00 €

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Devis pour commande en gros

Description

D/G ratio: 0.1 (by Raman spectroscopy)
Real density: 2.1 g/cm^3 (by Pycnometer)

Niveau de qualité

100

Essai

>95% carbon basis

rapport des dimensions

>100 , by FE-SEM

Superficie

28 m2/g , by N<SUB>2</SUB> adsorption

Diamètre

50-90 nm
65 nm (by FE-SEM)

Pf

3652-3697 °C (lit.)

Densité

~2.1 g/mL at 25 °C (lit.)

Masse volumique apparente

0.007 g/cm3 (by HCC method)

Chaîne SMILES 

[C]

InChI

1S/C

Clé InChI

OKTJSMMVPCPJKN-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Carbon nanotubes are hollow cylinders of carbon atoms. They are rolled-upgraphene sheets with carbon atoms covalently bonded to each other through sp2hybridization. Owing to their excellent mechanical and electrical properties,they are widely used in the field of flexible and wearable electronicdevices.

Application

Multi-walled carbon nanotubes (MWCNTs) functionalized with a polymer blend can be used as a hybrid catalyst for the degradation of crystal violet under visible light.

Due to their high magnetic sensitivity, MWCNT/manganese–zinc ferrite nanocomposites can be used in integrated nanoscale electronic systems.

They can also be used tofabricate sensors for strain-sensing applications because of their highmechanical flexibility and stability.

Caractéristiques et avantages

  • Excellent conductivity
  • Light weight
  • Chemical stability
  • Large surface area
  • High mechanical strength

Notes préparatoires

Chemical Vapor Deposition (CVD) Method

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Certificats d'analyse (COA)

Lot/Batch Number
MKCF3630
MKCF3628

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Questions

1–4 of 4 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

      Helpful?

  3. what is the mean number of walls in MWCNT?

    1 answer

    1. There are 88 - 100 walls in these multi-walled carbon nanotubes.

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  4. What's the length of these tubes?

    1 answer

    1. The length of this product is typically > 6.5 micron.

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