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Chemical Cleaning of Blackened Copper Wires.

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After seeing the blackened C.P.C. in the metal back box in another post, I researched this matter and found this video clip showing the cleaning of blackened copper wires chemically, which should not remove too much copper as a mechanical abrasion might.

https://www.youtube.com/watch?v=TfEIEVrmzVw


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    You need to be very confident you have removed/ neutralised all residue however, or things slowly carry on dissolving, yes weak acid takes the oxide first, over the bare metal, in the sense that the reaction rate for bare copper in weak acid is 1000s of times slower than for the oxide, however it is not a dead stop.
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    You need to be very confident you have removed/ neutralised all residue however, or things slowly carry on dissolving, yes weak acid takes the oxide first, over the bare metal, in the sense that the reaction rate for bare copper in weak acid is 1000s of times slower than for the oxide, however it is not a dead stop.
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