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Sigma-Aldrich

Carbon nanotube, multi-walled

>90% carbon basis, D × L 110-170 nm × 5-9 μm

Synonym(s):

MWCNT, MWNT, Multiwall carbon nanotube

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About This Item

CAS Number:
308068-56-6
MDL number:
MFCD00133992
UNSPSC Code:
12352103
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

100

Assay

>90% carbon basis

form

powder

composition

carbon, >90%

D × L

110-170 nm × 5-9 μm

mp

3652-3697 °C (lit.)

density

1.7 g/mL at 25 °C
~2.1 g/mL at 25 °C (lit.)

SMILES string

[C]

InChI

1S/C

InChI key

OKTJSMMVPCPJKN-UHFFFAOYSA-N

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General description

Multi walled carbon nanotubes (MWNTs, CNTs) were prepared by chemical vapor deposition (CVD). In chemical vapor deposition (CVD), a volatile precursor undergoes thermal decomposition at elevated temperatures to form a solid deposit on a substrate. 1 The diameter of the tube ranges between 110-170nm and the length is between 5-9μm. The multiwalled nanotubes are stable in inert atmosphere upto a temperature of 3697oC.

Application

Carbon nanotube, multi-walled (MWNT) belongs to the class of carbonaceous materials with excellent physiochemical, thermo-mechanical and electrochemical properties. This material can be used in a variety of sustainable energy applications such as solar cells, photocatalysis, biosensor, gas sensor, supercapacitor and as a filler that acts as a reinforcement to improve the mechanical property of composites.[1][2][3][4][5][6]
Toxic and immunological effects of carbon nanotubes on human colorectal cancer cell line (Caco-2), the human breast adenocarcinoma cell line(MCF-7)[7], Calu-3 cells from human lung adenocarcinoma and serous cells of proximal bronchial airways was investigated.[8][9] These multiwalled carbon nanotubes were used to design a 3D, free standing porous carbon structure. The self-supporting structures could find potential uses in energy storage, supercapacitors, photovoltaic cells, field emission devices, sensors and high performance catalysts.[10]Polystyrene/MWNTs nanocomposites have been fabricated and studied for its electrical and optical properties.[11] Preparation of platinum/MWNTs/cobaltite nanocomposites has also been reported.[12]

Preparation Note

Chemical Vapor Deposition (CVD) Method

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF4615V
MKCW8213
MKCT9450
MKCS2973
MKCS3811

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Fabrication and characterization of three-dimensional macroscopic all-carbon scaffolds.
Carbon null
Ternary platinum-multiwall carbon nanotube-cobaltite composites for methanol electrooxidation.
Awasthi R and Singh RN
International Journal of Electrochemical Science, 6, 4775-4775 (2011)
Non-functionalized multi-walled carbon nanotubes alter the paracellular permeability of human airway epithelial cells.
Rotoli BM, et al.
Toxicology Letters, 178(2), 95-102 (2008)
Airway barrier dysfunction induced by exposure to carbon nanotubes in vitro: which role for fiber length?.
Rotoli BM, et al.
Human & Experimental Toxicology, 28(6-7), 361-368 (2009)
Carbon nanotubes toxicology and effects on metabolism and immunological modification in vitro and in vivo.
Chiaretti M, et al.
Journal of Physics. Condensed Matter : An Institute of Physics Journal, 20(47) (2008)
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Manufacturing, Characterization and Use of Single Walled Carbon Nanotubes

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Sorting Carbon Nanotubes and Their Biological Applications

Carbon nanotubes (CNTs) have received much attention since their discovery in 1991 by Sumio lijima1 due to their excellent mechanical, electrical, and optical properties.

3D Printable Conductive Nanocomposites of PLA and Multi-walled Carbon Nanotubes

A nanocomposite is typically defined as a mixture between a host material (e.g., polymer matrix) and nanofillers with at least one dimension of less than 100 nm.

Graphene Nanoribbons: Production & Applications

Graphene's unique properties spark interdisciplinary interest; its honeycomb structure offers electrical, optical, and mechanical marvels.

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    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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