Copper naphthenate
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Copper naphthenate is a copper derivative of naphthenic acid. Although commonly called salts of naphthenic acid, copper naphthenate is not ionic, but is a covalent coordination complex, hence its lipophilic character. Copper naphthenate is most widely used in wood preservation and for protecting other cellulosic materials such as textiles and cordage from damage by decay fungi and insects. Other metal naphthenates are used as paint driers, rubber adhesion promoters, lubricant additives, and catalysts where oil solubility is required.
Quick Facts Names, Identifiers ...
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IUPAC names
Copper salt Naphthenic acid | |
Other names
QNAP, Cunapsol, CuNap, Cuprinol | |
Identifiers | |
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ChemSpider | |
ECHA InfoCard | 100.014.234 |
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Properties | |
CuCnH2n-zO4 n: 10-24; z: 0, 1, 2 | |
Molar mass | ~346-782 |
Appearance | Blue-green amorphous solid or viscous liquid. Always formulated as a liquid solution or emulsion. |
Density | 1.055 g/cm3 (1.02 g/cm3 as 8% Cu solution in #2 diesel) |
Boiling point | Non-volatile: > 100 °C (212 °F; 373 K) |
Essentially insoluble; 46 mg/L | |
Hazards | |
Flash point | > 37.8 °C (100.0 °F; 310.9 K) as solution in mineral spirits |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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