Cupric oxide black powder extra pure

Cupric oxide black powder extra pure is a high-purity form of copper(II) oxide (CuO), typically ≥99% assay, appearing as a fine, stable black amorphous or crystalline powder used in applications requiring minimal impurities.​

Identity and Composition

Chemical name: Cupric oxide; Copper(II) oxide.​

Molecular formula: CuO; molecular weight 79.55 g/mol.​

Grade specifications: Extra pure with CuO ≥98–99.99%, low impurities (e.g., Cu₂O ≤3%, Fe/Zn/Pb trace levels).​

Physical Properties

Appearance: Black powder (amorphous or monoclinic crystals).​

Density: 6.31–6.315 g/cm³.​

Melting point: 1326 °C; insoluble in water, soluble in acids (HCl, H₂SO₄, HNO₃) and alkaline solutions.​

Typical Uses

Extra pure cupric oxide black powder serves as a precursor for copper salts, catalyst, pigment in ceramics/glazes (blue/green colors), in batteries, welding fluxes, gas sensors, semiconductors, and wood preservatives.​

Handling and Safety

Stable but acts as an oxidizing agent; reacts with acids/bases/reductants (e.g., H₂, CO, C). Harmful if swallowed/inhaled, skin/eye irritant; avoid dust, store sealed away from combustibles.​

For catalog purposes: “Cupric oxide black powder, extra pure, CuO ≥99%, black amorphous powder, mp 1326 °C, insoluble in water, for catalysts/pigments; oxidizing agent, irritant.”​