Cupric sulphide extra pure

Cupric sulphide extra pure refers to high-purity copper(II) sulfide (CuS), typically ≥99% assay, supplied as a black crystalline powder or lumps for laboratory and specialized applications where low impurities are essential.​

Identity and Composition

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

Molecular formula: CuS; molecular weight 95.61 g/mol.​

Grade specifications: Extra pure variants achieve 99.5% purity, often -100 mesh particle size, with minimal contaminants for semiconductor or reagent use.​

Physical Properties

Appearance: Black powder or lumps.​

Density: 4.6 g/cm³.​

Melting point: 500 °C (decomposes).​

Solubility: Insoluble in water; hygroscopic nature requires careful storage.​

Typical Uses

Extra pure cupric sulphide finds application in semiconductors, photo-optic devices, thin-film synthesis (e.g., covellite phase for antimicrobial or plasmonic properties), and as a precursor in nanotechnology.​

Handling and Safety

Hygroscopic; store in sealed containers to prevent moisture absorption. Limited specific hazard data in sources, but treat as irritant and avoid dust inhalation; general precautions for metal sulfides apply.​

For catalog use: “Cupric sulphide, extra pure, CuS ≥99%, black powder, density 4.6 g/cm³, mp 500 °C (dec.), insoluble in water, for semiconductors and synthesis; hygroscopic.”