Rust Remover

[Donkey Hotay]

Not vinegar (acetic acid solution), but phosphoric acid : http://en.wikipedia.org/wiki/Phosphoric_acid

Note especially the sections
"Rust Removal"
and
"Processed Food Use"


Acetic acid/vinegar/ethanoic acid is useful for descaling/deliming : http://en.wikipedia.org/wiki/Acetic_acid

Formic acid/methanoic acid is also of interest; ants produce and use it as a defensive weapon : http://en.wikipedia.org/wiki/Formic_acid