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Old 20th May 2019, 2:34 pm   #33
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Join Date: Aug 2003
Location: near Reading (and sometimes Torquay)
Posts: 2,358
Default Re: Rust removal from steel component on the cheap.

A clue to how the original mixture works is that hydrogen peroxide has to be stabilised and tends to contain things like phosphoric acid.

(Something that people who used it to whiten teeth discovered the hard way!)
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