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Chemicals Used for Creating Patinas For Copper

Patinas have been made from a variety of materials over the years. The most common palette for patinas for copper alloys consists of materials such as ferrous sulfate (red), ferric hydroxide (brown), aluminum hydroxide (yellow), lye (yellow), copper oxide (yellow), manganese hydroxide (red) and sulfuric acid (orange-reddish). In addition, a variety of acids are used …

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