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Safety Information

208825

Sigma-Aldrich

Copper(I) oxide

powder, ≤7 μm, 97%

Synonym(s):

Cuprous oxide

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About This Item

Linear Formula:
Cu2O
CAS Number:
1317-39-1
Molecular Weight:
143.09
EC Number:
215-270-7
MDL number:
MFCD00010974
UNSPSC Code:
12352302
PubChem Substance ID:
329752047
NACRES:
NA.55

Quality Level

200

Assay

97%

form

powder

contains

stabilizer

particle size

≤7 μm

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 base that can be used in nucleophilic substitution, decarboxylation, cyclocondensation, and 1,1-addition reactions. It can also be used to form carbenoid intermediates from diazo compounds and radicals from arenediazonium salts.

Application

Copper(I) oxide can be used as a catalyst to synthesize:
  • Ynones via solvent-free Sonogashira reaction.
  • N-Heteroaryl derivatives via cross-coupling of nitrogen heterocycles with halopyridines.

Signal Word

Danger

Hazard Statements

H302 + H332,H318,H410

Hazard Classifications

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

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

208825-VAR:
208825-12KG:
208825-500G:4548173931296
208825-2KG:4548173931289
208825-BULK:
208825-25G:4548173931272
208825-VAR-D:

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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Dmytro S Kozak et al.
Scientific reports, 6, 21178-21178 (2016-02-18)
Electrolytic processes are widely used to synthesize different nanomaterials and it does not depend on what kind of the method has been applied (wet-chemistry, sonochemistry, plasma chemistry, electrolysis and so on). Generally, the reactions in the electrolyte are considered to
Copper (I) Oxide-Mediated Cyclization of o-Haloaryl N-Tosylhydrazones: Efficient Synthesis of Indazoles.
Tang M, et al.
Advanced Synthesis & Catalysis (2016)
Copper (I) Oxide
Tuckmantel W
e-EROS Encyclopedia of Reagents for Organic Synthesis (2001)
Electrochemical deposition of copper (I) oxide films.
Golden TD, et al.
Chemistry of Materials, 8(10), 2499-2504 (1996)
A highly efficient nano-sized Cu2O/SiO2 egg-shell catalyst for C?C coupling reactions
Kim S, et al.
Royal Society of Chemistry Advances, 8, 6200-6205 (2018)
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