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Boiler cleaning with oxalic acid

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A boiler needs cleaning. The boiler is now operating and is corrosive. So not much scale attached. the main deposit is Iron oxide, and the Boiler is still corrosive by oxygen (no Tannin or Sulfite is used)
In such case, Boiler acid cleaning before applying oxygen scavenger is nessecary? The acid can "sweep out" scale and cause more severe corrosion after that? I intend to used 3% Oxalic Acid [linked by editor to product info at Rockler] and inhibitor to soak the boiler (small boiler) for 6 hours. Oxalic acid seems not much applied in Boiler cleaning, So I wonder is it OK. The reason of oxalic selection is its capability to de-rust of oxalic acid.
Thank you very much

Severa
Tachico - Vietnam


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Oxalic acid is toxic, much better and cheaper choice is citric acid. Good luck!

Goran Budija
- Zagreb, Croatia

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