
Copper naphthenate (CuN) is a copper (II) complex of naphthenic acid, a non-ionic covalent complex with the molecular formula: C₁₂H₁₀O, MW: 170.21. Commercially available products are typically dark green viscous liquids or solids containing 6%–8% copper. They exhibit excellent fat solubility and biological activity and are low-toxicity, highly efficient, and environmentally friendly multifunctional chemical products widely used in preservation, mold prevention, and catalysis.
| Item | Specification |
| Melting point | >100℃ |
| Boiling point | 154-202℃(800 Torr) |
| Density | 1.055 g/cm³ |
| Flash point | 40-45℃ |
| Vapor pressure | 0.3–0.4 Pa at 25°C |
| Solubility | Insoluble in water (70.9–88.1 mg/L), slightly soluble in ethanol, readily soluble in petroleum solvents, aromatic hydrocarbons, and mineral oils. |
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