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2. How To Clean Copper For Tarnish-Free Shine - AOL

   www.aol.com/clean-copper-tarnish-free-shine...

   Much like brass, copper wear-and-tear happens due to oxidization. The oxygen in our air slowly reacts with the alloys in copper to layer on a green coating called a patina. One of the most famous ...

3. Patina - Wikipedia

   en.wikipedia.org/wiki/Patina

   The Statue of Liberty gets its famous green color from the natural patina formed on its copper surface. The green patina that forms naturally on copper and bronze, sometimes called verdigris, usually consists of varying mixtures of copper chlorides, sulfides, sulfates, and carbonates, depending upon environmental conditions such as sulfur ...

4. Verdigris - Wikipedia

   en.wikipedia.org/wiki/Verdigris

   The Statue of Liberty, showing advanced patination; verdigris is responsible for the statue's iconic green colour.. Verdigris (/ ˈ v ɜːr d ɪ ɡ r iː (s)/) [1] is a common name for any of a variety of somewhat toxic [2] [3] [4] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.

5. Green pigments - Wikipedia

   en.wikipedia.org/wiki/Green_pigments

   Its name comes from the natural pigments that form a patina on copper, bronze, and brass as it ages. [2] The most famous example is the green patina that formed on the Statue of Liberty in New York Harbor. In the Middle Ages, the patina was made by attaching copper strips to a wooden block with acetic acid, then burying the sealed block in dung ...

6. How to Bring Beach House Style to Your Kitchen, Even If You ...

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   A white cast-iron apron-front sink, a gooseneck bridge faucet, and a drainboard inset into the marble countertop complete the classic look in this airy coastal kitchen. RELATED: The Best Kitchen ...

7. Chemical coloring of metals - Wikipedia

   en.wikipedia.org/wiki/Chemical_coloring_of_metals

   Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...