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637351

Sigma-Aldrich

Carbon nanotube, double-walled

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50-80% carbon basis, O.D. × I.D. × L 5 nm × 1.3-2.0 nm × 50 μm

Synonym(s):
DWNT, Double wall carbon nanotubes
CAS Number:
MDL number:
NACRES:
NA.23

assay

50-80% carbon basis

form

powder

composition

carbon, >90% (trace metal basis)

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

O.D. × I.D. × L

5 nm × 1.3-2.0 nm × 50 μm

surface area

BET surf. area >600 m2/g

bulk density

0.12‑0.14 g/mL

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General description

Structure of double walled carbon nanotubes (DWNTs) can be imagined as a two coaxial concentric single walled carbon nanotubes (SWNTs). It has been prepared by catalytic chemical vapor deposition. DWNTs exhibit excellent field emission properties and may be potentially useful as field emission displays (FEDs) and field emission transistors (FETs).
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Application

Carbon nanotube, double walled can be used for a variety of applications such as solar cells, nanomechanical resonators, film heaters, biosensors, and field emission displays.

Packaging

250 mg in glass insert
1 g in glass bottle
Packaged in glass bottles

Preparation Note

Chemical Vapor Deposition (CVD) Method

Analysis Note

50-80% DWNT content, 10-40% other CNTs, remainder being amorphous carbon and residual metal catalysts.

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

Certificate of Analysis

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Certificate of Origin

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