Copper Fluoride

Copper fluoride typically refers to copper(II) fluoride (CuF₂, cupric fluoride), a white to light gray hygroscopic crystalline powder with a monoclinic crystal structure, used in fluorination reactions and ceramics. Copper(I) fluoride (CuF) is less common and unstable.​

Identity and Composition

Chemical name: Copper(II) fluoride (cupric fluoride).​

Molecular formula: CuF₂; molecular weight 101.54 g/mol.​

Grade specifications: ≥98% purity, low loss on drying (<0.5% at 105 °C).​

Physical Properties

Appearance: White/light gray powder.​

Density: 4.23 g/cm³ at 25 °C.​

Melting point: 950 °C (decomposes).​

Solubility: Slightly soluble in water (hydrolyzes in hot water); soluble in dilute acids.​

Typical Uses

Cupric fluoride acts as a fluorinating agent for aromatic hydrocarbons, catalyst in organic synthesis, and in ceramics/enamels; dihydrate form (blue) used similarly.​

Handling and Safety

Highly toxic, corrosive (releases HF with acids); irritant to skin/eyes/respiratory system. Use fume hood, PPE; store dry and sealed.​

For catalog purposes: “Copper fluoride (CuF₂) ≥98%, white hygroscopic powder, mp 950 °C (dec.), slightly water-soluble, fluorinating agent; toxic/corrosive.”