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241741

Sigma-Aldrich

Copper(II) oxide

ACS reagent, ≥99.0%

Synonym(s):

Cupric oxide

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About This Item

Empirical Formula (Hill Notation):
CuO
CAS Number:
1317-38-0
Molecular Weight:
79.55
EC Number:
215-269-1
MDL number:
MFCD00010979
UNSPSC Code:
12352303
PubChem Substance ID:
329752591
NACRES:
NA.21
Assay:
≥99.0%
grade:
ACS reagent
form:
powder

grade

ACS reagent

Quality Level

200

Assay

≥99.0%

form

powder

reaction suitability

reagent type: catalyst
core: copper

impurities

Free alkali, passes test
≤0.002% N compounds
≤0.01% C compounds
≤0.02% S compounds
≤0.02% insol. dil. HCl

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.02%

cation traces

Ca: ≤0.01%
Fe: ≤0.05%
K: ≤0.02%
Na: ≤0.05%

SMILES string

[Cu]=O

InChI

1S/Cu.O

InChI key

QPLDLSVMHZLSFG-UHFFFAOYSA-N

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General description

Copper (II) oxide is one of the two stable oxides of copper. Cupric oxide is a precursor to many copper-containing products and chemicals. It is used as a pigment, fungicide, and antirust protection agent for marine paints. CuO possesses notable and admirable characteristics like abundance and affordability, ease of manufacturing, scalability, non-toxicity, antioxidant properties, and semiconducting characteristics.

Application

Copper (II) oxide is used:,As a catalyst in the synthesis of 2-Aryl- and 2-alkenyl-1,3,4-oxadiazoles from treating 1,3,4-oxadiazoles with aryl or alkenyl halides.

Pictograms

Environment
GHS09

Signal Word

Warning

Hazard Statements

H410

Precautionary Statements

P273 - P391 - P501

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV9265
MKCS7595
MKCQ9901
MKCQ0684
MKCB5158

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A refinement of the crystal structure of copper (II) oxide with a discussion of some exceptional esd's.
?sbrink S and Norrby LJ.
Acta Crystallographica Section B, Structural Science, 26(1), 8-15 (1970)
Eagleson M.
Concise Encyclopedia Chemistry, 523-523 (1994)
Copper (II) oxide nanowires for p-type conductometric NH3 sensing.
Shao F, et al.
Applied Surface Science, 311, 177-181 (2014)
DSC kinetics of the thermal decomposition of copper (II) oxalate by isoconversional and maximum rate (peak) methods.
Muraleedharan K and Kripa S.
Journal of Thermal Analysis and Calorimetry, 115(2), 1969-1978 (2014)
Yunxin Liu et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(13), 4319-4326 (2013-03-01)
How to extend ultraviolet photocatalysts to the visible-light region is a key challenge for solar-driven photocatalysis. Herein, we show that ultraviolet ZnO photocatalysts can present high visible-light photocatalytic activity when combined with CuO quantum dots (QDs; <3 nm). Theoretical analysis demonstrates
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