637351

Carbon nanotube, double-walled

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: 308068-56-6
• MDL number: MFCD06411993
• UNSPSC Code: 12352103
• NACRES: NA.23

Properties

• Assay: 50-80% carbon basis
• form: powder
• composition: carbon, >90% (trace metal basis)
• O.D. × I.D. × L: 5 nm × 1.3-2.0 nm × 50 μm
• surface area: >600 m²/g
• bulk density: 0.12‑0.14 g/mL
• SMILES string: [C]
• InChI key: OKTJSMMVPCPJKN-UHFFFAOYSA-N

Description

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).

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

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.

Safety Information

• 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