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61139

Sigma-Aldrich

Copper

turnings, purum p.a., ≥99.0%

Synonym(s):

Cu

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About This Item

Empirical Formula (Hill Notation):
Cu
CAS Number:
Molecular Weight:
63.55
EC Number:
MDL number:
UNSPSC Code:
12141711
PubChem Substance ID:
NACRES:
NA.22

grade

purum p.a.

Quality Level

Assay

≥99.0%

quality

turnings

reaction suitability

core: copper
reagent type: catalyst

resistivity

1.673 μΩ-cm, 20°C

turnings L

~0.5 cm

bp

2567 °C (lit.)

mp

1083.4 °C (lit.)

density

8.94 g/mL at 25 °C (lit.)

cation traces

Al: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Fe: ≤200 mg/kg
Mg: ≤50 mg/kg
Mn: ≤50 mg/kg
Ni: ≤50 mg/kg
Pb: ≤100 mg/kg
Zn: ≤200 mg/kg

SMILES string

[Cu]

InChI

1S/Cu

InChI key

RYGMFSIKBFXOCR-UHFFFAOYSA-N

General description

Copper turnings are a form of copper metal that has been specifically cut to have a high surface area. This form of copper is particularly useful because it provides a greater contact area for reagents to interact with which can help speed up reactions and increase yields.

Application

Copper turnings are used to synthesize inorganic salts and organometallic complexes and catalysts that can be employed in a variety of synthetic transformations. It is useful in:
  • Synthesis of polynitro[60]fullerene.
  • Copper-catalyzed azide-alkyne Huisgen cycloaddition (click reaction) to synthesize 5-membered heterocycles.
  • Trifluoromethylation of heteroaromatic compounds.
  • Preparation of electrolyte for all-copper hybrid flow batteries.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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Structural and thermal properties of the alkaline cuprate KCuO2
Giorgio A. Costa, Elena Kaiser
Thermochimica Acta, 591-598 (1995)
Synthesis and explosive decomposition of polynitro [60] fullerene.
Cataldo F, et al.
Carbon, 62, 413-421 (2013)
Three-component coupling of alkynes, Baylis?Hillman adducts and sodium azide: A new synthesis of substituted triazoles.
Chandrasekhar S, et al.
Tetrahedron Letters, 47(18), 3059-3063 (2006)
Copper catalysis in organic synthesis.
Sherry R C.
Beilstein Journal of Organic Chemistry, 11, 2252?2253-2252?2253 (2015)
Encyclopedia of Inorganic and Bioinorganic Chemistry (2011)

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