It is recommended to store this product in a tightly closed container under inert gas environment and keep it away from heat and sources of ignition. For small quantities use over the long term, it is recommended to transfer the product into appropriately sized vials for each use that helps maintain the integrity and ensure safe handling.
774081
Copper
nanopowder, 25 nm particle size (TEM)
Synonym(s):
Copper nanoparticles
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5 G
$84.72
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5 G
$84.72
About This Item
Empirical Formula (Hill Notation):
Cu
CAS Number:
Molecular Weight:
63.55
EC Number:
MDL number:
UNSPSC Code:
41141805
PubChem Substance ID:
NACRES:
NA.23
Recommended Products
Quality Level
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
Related Categories
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.
signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Sol. 2 - Self-heat. 1
Storage Class
4.2 - Pyrophoric and self-heating hazardous materials
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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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
Low-cost and high-throughput synthesis of copper nanopowder for nanofluid applications
Maji NC, et al.
Chemical Engineering Journal, 353, 34-45 (2018)
Evaluation of copper nanoparticles-Paraffin wax compositions for solar thermal energy storage
Lin SC and Al-Kayiem HH
Solar Energy, 132, 267-278 (2016)
Cu and Cu-based nanoparticles: synthesis and applications in catalysis
Gawande MB, et al.
Chemical Reviews, 116(6), 3722-3811 (2016)
Vizcaino; A.J.;
International Journal of Hydrogen Energy, 32(10-11), 1450-1461 (2007)
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
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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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