61139

Copper

turnings, purum p.a., ≥99.0%

• Synonym(s): Cu
• Empirical Formula (Hill Notation): Cu
• CAS Number: 7440-50-8
• Molecular Weight: 63.55
• EC Number: 231-159-6
• MDL number: MFCD00010965
• UNSPSC Code: 12141711
• PubChem Substance ID: 57651817
• NACRES: NA.22

Properties

• grade: purum p.a.
• 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

Description

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.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)