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774081

Sigma-Aldrich

Copper

nanopowder, 25 nm particle size (TEM)

Synonym(s):

Copper nanoparticles

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About This Item

Empirical Formula (Hill Notation):
Cu
CAS Number:
7440-50-8
Molecular Weight:
63.55
EC Number:
231-159-6
MDL number:
MFCD00010965
UNSPSC Code:
12352302
PubChem Substance ID:
329767661
NACRES:
NA.23

Quality Level

100

form

nanopowder

resistivity

1.673 μΩ-cm, 20°C

particle size

25 nm (TEM)

bp

2567 °C (lit.)

mp

1083.4 °C (lit.)

density

8.94 g/mL at 25 °C (lit.)

SMILES string

[Cu]

InChI

1S/Cu

InChI key

RYGMFSIKBFXOCR-UHFFFAOYSA-N

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General description

This copper nanopowder is a fine reddish-brown to black powder made of metallic copper nanoparticles with an average particle size of 25 nm. The particles are not oxidized and we recommend storing the product under inert gas to preserve the unoxidized surfaces.

Application

Copper nanopowder, 25 nm can be used for a variety of applications such as printed electronics, electroless copper plating, heat transfer fluids, catalysis, and thermal energy storage.

Pictograms

FlameEnvironment
GHS02,GHS09

Signal Word

Danger

Hazard Statements

H228,H251,H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Sol. 2 - Self-heat. 1

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Chih-Ying Lee et al.
Chemosphere, 261, 128051-128051 (2020-10-30)
The potential toxicity of copper nanoparticles (CuNPs) to early stages of fishes is not fully understood, and little is known about their effects on ionocytes and associated functions. This study used zebrafish embryos as a model to investigate the toxic
Ultrasound assisted dispersal of a copper nanopowder for electroless copper activation
Graves JE, et al.
Ultrasonics Sonochemistry, 29, 428-438 (2016)
Chan; G.H.;
Nano Letters, 7(7), 1947-1952 (2007)
Evaluation of copper nanoparticles-Paraffin wax compositions for solar thermal energy storage
Lin SC and Al-Kayiem HH
Solar Energy, 132, 267-278 (2016)
Copper nanoparticles for printed electronics: routes towards achieving oxidation stability
Magdassi S, et al.
Materials, 3(9), 4626-4638 (2010)
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