Cupric fluoride

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.”​