Hey Guys,
I'm an electroplater by trade [no I'm not chroming your bumper!!lol] and I play with this stuff all the time.
Yep thats right,phosphoric acid turns Iron oxide [rust] into a more stable form Iron phosphate.
Oven cleaner,Drano are strong Alkilis.Caustic soda.
This will remove paint,anodising and will eat aluminium if left too
long.
All of the above will eat eyeballs,skin,conctrete etc.
Be very careful with it.
Always add small volumes of chemicals to a lot of water.
Never the other way round.
Heat can be generated too.
Never add these chemicals to hot water.especially caustic.
I have the scars to prove that caustic into hot water
can instantly boil and erupt.
Safest bet is to get it professionaly stripped.
If you must do it yourself.safety glasses and gloves are the go.
Cheers
Shane.