Description
Cupric fluoride, also known as copper(II) fluoride (CuF2), is an inorganic compound appearing as a white to light gray crystalline powder that is hygroscopic and has a monoclinic crystal structure. It is a solid with a molecular weight of 101.54 g/mol and melts with decomposition around 950 °C. Cupric fluoride is sparingly soluble in water and hydrolyzes in hot water.
Identity and Composition
Chemical name: Copper(II) fluoride (cupric fluoride).
Molecular formula: CuF2; molecular weight 101.54 g/mol.
Purity: Extra pure grades typically ≥98% assay.
Physical Properties
Appearance: White to light gray powder or crystals.
Density: Approximately 4.23 g/cm³ at 25 °C.
Melting Point: Around 950 °C with decomposition.
Solubility: Sparingly soluble in cold water, soluble in dilute acids, hydrolyzes in hot water.
Typical Uses
Cupric fluoride is used as a catalyst in organic synthesis (e.g., fluorination reactions), in ceramics and enamels, high-energy batteries, as a flux and additive in metal processing, and in the fabrication of fluorinated compounds. Its hydrated forms are used in enamel and ceramic industries, while anhydrous forms are favored in non-aqueous battery cells and chemical synthesis.
Handling and Safety
It is hygroscopic and should be stored in a cool, dry, well-ventilated place away from moisture. It is toxic, can cause skin and eye irritation, and contact with acids releases toxic gases. Appropriate protective gear is recommended during handling.
For catalog description: “Cupric fluoride extra pure (CuF2), white to light gray crystalline powder, ≥98% purity, melting point 950 °C (dec.), sparingly soluble, used in catalysts, ceramics, batteries; toxic and hygroscopic.”