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724769 Aldrich

Carbon nanotube, multi-walled Green Alternative

O.D. × L 6-9 nm × 5 μm, >95% (carbon)

Synonym: MWCNT, MWNT, Multiwall carbon nanotube, SWeNT® SMW100



Related Categories 3D Printing Materials for Research and Development, Alternative Energy, Carbon Nanomaterials, Carbon Nanotubes, Carbon Nanotubes and Fullerenes,
assay   >95% (carbon)
form   powder
greener alternative product characteristics   Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
O.D. × L   6-9 nm × 5 μm
diam.   5.5 nm , mode
  6.6 nm , median
mp   3652-3697 °C(lit.)
density   ~2.1 g/mL at 25 °C(lit.)
bulk density   0.22 g/cm3


Preparation Note

CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method


1. Fiber optics Transducers
2. Fiber optic tips for microbubble generation in liquids
3. Tranperant conductive electrodes
4. Electrically conductive polymers
5. Battery cathodes
6. High strength composites

General description

These multi walled carbon nanotubes (MWNTs, CNTs) were prepared by chemical vapor deposition (CVD) using cobalt and molybdenum as catalysts (CoMoCAT). In chemical vapor deposition (CVD), a volatile precursor undergoes thermal decomposition at elevated temperatures to form a solid deposit on a substrate. Compared to other techniques CVD produces greater yield of carbon nanotubes. Morphology and structure of the nanotubes can be easily tuned using CVD technique. The CNTs formed can be formed in bundles over a catalyst support or in patterns over substrates.

Legal Information

CoMoCAT is a trademark of Chasm Advanced Materials

SWeNT is a registered trademark of Chasm Advanced Materials

Other Notes

Sigma Life Science is committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


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

Vincent Hughes, Ilyass Tabiai, Kambiz Chizari, Daniel Therriault* Laboratory for Multiscale Mechanics (LM2) École Polytechnique Montréal, QC H3T1J4, Canada *Email: daniel.therriault@polymtl.ca
Vincent Hughes, Ilyass Tabiai, Kambiz Chizari, Daniel Therriault*
Material Matters, 2016, 11.2
Keywords: Degradations, Deposition, Electronics, Evaporation, Nanomaterials, Nanotubes, Optical microscopy

3D Printing of Carbon Fiber-Reinforced Composites

3D printing is a type of additive manufacturing that can be used to rapidly fabricate components with highly customizable geometries, most typically using a layer-by-layer fabrication process. 3D pri...
Zhenyu Bo* (Ph.D Candidate at Northwestern University) and Jia Choi*, PhD, Product Manager

*Materials Science Product Management Team, MilliporeSigma, Milwaukee, WI.
Keywords: Deposition, Nanomaterials, Nanotubes

Boron Nitride Nanotubes: Properties, Synthesis and Applications

Boron nitride nanotubes [(BNNT), Aldrich Product No. 802824] are close structural analogs of carbon nanotubes [(CNT), Aldrich Product No. 791431], which are high aspect ratio nanotubular material, wh...
Richard Dolbec
PhD, Director, R&D Group, Tekna Plasma Systems Inc.
Keywords: Absorption, Catalysis, Ceramics, Chemical vapor deposition, Deposition, Inductively coupled plasma, Melting, Microscopy, Nanoelectronics, Nanomaterials, Nanotubes, Nucleic acid annealing, Oxidations, Scanning electron microscopy, Transmission electron microscopy, Ultraviolet-Visible spectroscopy


Single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs) share some similarities, but also striking differences. SWNTs are an allotrope of sp2 hybridized carbon similar to ful...
Ricardo Prada Silvy, Yongqiang Tan and Philip Wallis
SouthWest NanoTechnologies
Keywords: Automotive, Degradations, Filtration, Materials Science, Nanotubes, Oxidations, Raman spectroscopy, Spectroscopy

Graphene Nanoribbons: Production and Applications

Ayrat M. Dimiev1 and James M. Tour2 1EMD Performance Materials Corp., 70 Meister Ave, Somerville, NJ 08876 USA 2Departments of Chemistry, Materials Science and NanoEngineering, and Computer Science, ...
Keywords: Alkylations, Cyclizations, Mass spectrometry, Materials Science, Nanotubes, Organic synthesis, Polymerization reactions, Raman spectroscopy, Separation, Solvents, Sonication, Spectroscopy

Graphene-Based Transparent Conductive Electrodes

Kehan Yu1 and Junhong Chen2* 1Department of Chemical Engineering Case Western Reserve University Cleveland, Ohio 44106 2Department of Mechanical Engineering University of Wisconsin-Milwaukee, Milwauk...
Keywords: Catalysis, Centrifugation, Chemical vapor deposition, Deposition, Electronics, Microelectronics, Nanomaterials, Nanotubes, Oxidations, PAGE, Positron Emission Tomography, Purification, Raman spectroscopy, Reductions, Semiconductor, Solar cells, Solvents, Sonication, Spectroscopy

Lightweight Metal Matrix Nanocomposites - Stretching the Boundaries of Metals

Composite materials that traditionally incorporate micron scale reinforcements in a bulk matrix offer opportunities to tailor material properties such as hardness, tensile strength, ductility, densit...
Prof. P. K. Rohatgi and B. Schultz
Material Matters 2007, 2.4, 16.
Keywords: Addition reactions, Applications, Automotive, Capillary electrophoresis, Ceramics, Chemical vapor deposition, Deposition, Industries, Magnetic resonance spectroscopy, Material Matters, Metal Science, Methods, Nanomaterials, Nanotubes, Reductions, Semiconductor, Titrations, Transmission electron microscopy, Type

Manufacturing, Characterization and Use of Single Walled Carbon Nanotubes

Carbon nanotubes are materials that possess remarkable properties and offer extraordinary possibilities. This article gives a brief overview of the physico-chemical nature and characterization of sin...
Richard Jansen, Philip Wallis
Material Matters 2009, 4.1, 23.
Keywords: Absorption, Applications, Catalysis, Centrifugation, Chemical vapor deposition, Diffraction, Formulations, Indicators, Infrared spectroscopy, Methods, Nanotechnology, Nanotubes, Oxidations, Purification, Raman spectroscopy, Semiconductor, Solar cells, Sonication, Spectroscopy, Support, Type, Ultraviolet-Visible spectroscopy, X-Ray diffraction

Polymer-Sorted Semiconducting Carbon Nanotubes for Transistors and Solar Cells

Matthew J. Shea,1 Gerald J. Brady,1 Juan Zhao,1,2 Meng-Yin Wu,3 Harold T. Evensen,3 Michael S. Arnold1* 1Department of Materials Science and Engineering, University of Wisconsin-Madison, USA 2School ...
Keywords: Absorption, Chemical vapor deposition, Chromatography, Column chromatography, Deposition, Diffusion, Materials Science, Microscopy, Nanotubes, Renewable energy, Scanning electron microscopy, Semiconductor, Separation, Solar cells

Sorting Carbon Nanotubes and Their Biological Applications

Hyunkyu Oh and Sang-Yong Ju* Department of Chemistry, Yonsei University Seoul 120-749, Korea *Correspondence Email: syju@yonsei.ac.kr
Keywords: Absorption, Adsorption, Asymmetric synthesis, Cancer, Carboxylations, Chromatography, Electrophoresis, Filtration, Inflammation, Infrared spectroscopy, Ion Exchange, Ion exchange resins, Ligands, Materials Science, Nanomaterials, Nanotubes, Oxidations, Semiconductor, Separation, Titrations

Peer-Reviewed Papers


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