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566284

Sigma-Aldrich

Copper(I) oxide

≥99.99% trace metals basis, anhydrous

Synonym(s):

Cuprous oxide

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5 G
€60.10
25 G
€195.00

About This Item

Linear Formula:
Cu2O
CAS Number:
Molecular Weight:
143.09
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.21
grade:
anhydrous
form:
powder

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grade

anhydrous

Quality Level

Assay

≥99.99% trace metals basis

form

powder

density

6 g/mL at 25 °C (lit.)

SMILES string

[Cu]O[Cu]

InChI

1S/2Cu.O

InChI key

BERDEBHAJNAUOM-UHFFFAOYSA-N

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General description

Copper(I) oxide is a weak inorganic base that can be used to activate halides for nucleophilic substitution reaction. It is also used in decarboxylation and cyclo condensation reactions.[1]

Application

Copper(I) oxide can be used:
  • As a precursor to prepare nanoparticles, nanocrystals, and quantum dots for various applications.[2][3][4]
  • To catalyze the N-arylation of azoles under aqueous conditions using phase-transfer catalyst.[5]
  • To prepare reduced graphene oxide-based nano copper composites applicable as a sensor for the detection of dopamine.[6]
  • As a copper precursor to prepare Cu2O-TiO2 nanoparticle-based composite materials with aluminosilicate geopolymers applicable in the removal of organic pollutants from water.[7]

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1

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

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A ligand-free copper (I) oxide catalyzed strategy for the N-arylation of azoles in water
Yong FF, et al.
Tetrahedron Letters, 52(11), 1161-1164 (2011)
Synthesis and properties of novel photoactive composites of P25 titanium dioxide and copper (I) oxide with inorganic polymers
Falah M and MacKenzie KJD
Ceramics International, 41(10), 13702-13708 (2015)
Copper(I) oxide
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2009)
Synthesis of copper and copper (I) oxide nanoparticles by thermal decomposition of a new precursor
Salavati-Niasari M and Davar F
Materials Letters, 63(3-4), 441-443 (2009)
Preparation of copper (I) oxide nanohexagon decorated reduced graphene oxide nanocomposite and its application in electrochemical sensing of dopamine
Sivasubramanian R and Biji P
Materials Science and Engineering, B, 210(11), 10-18 (2016)

Articles

The diversity of applications and nanostructured materials accessible using ultrasonic spray methods are highlighted in this article.

Ultrasonic spray pyrolysis produces scalable nanomaterials like metal oxides and quantum dots for diverse applications.

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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