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What is super pickling?

Super pickle is a generic term for a family of hydrogen peroxide, sodium bisulfate (Sparex), and white vinegar pickles. They are used with copper or copper-bearing alloys, such as brass and bronze. It is also good for pickling nickel to remove the copper flash that appears after it’s heated. This recipe contains only sodium bisulfate and hydrogen peroxide, though other variations may contain white vinegar.

Recipe
Pour 16 fl. oz. (473 mL) of hydrogen peroxide into a plastic or glass container. Mix in 2 oz. (56.7 g) of sodium bisulfate until it dissolves. 

Disposal/Reuse
Place steel wool into the pickle to remove the copper from the spent solution. The steel wool pulls the copper out of the pickle almost instantly, turning it pink/rust colored. Dispose of the steel wool. The pickle can be reused, if desired. To dispose of the pickle, pour it into a large container of water, and use baking soda to neutralize the pickle. Follow your area’s hazardous-waste disposal guidelines for disposing of neutralized pickle.
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