According to the u s.
Muriatic acid on aluminum siding.
Keep in mind that this acid is very dangerous and should be kept away from pets and children.
Very weak solutions of sulfuric acid will not damage aluminum parts if you keep them at room temperature.
Using muriatic acid step 1 put on goggles and rubber gloves to protect yourself from the corrosive effects of muriatic acid.
It is also toxic to the environment.
For efflorescence and other stubborn stains mix 1 cup of 10 percent muriatic acid in 1 gallon of water.
Place the aluminum item in your kitchen sink if it s small enough to fit without any splashing or a large metal tub for bigger items.
Pour the muriatic acid directly on the aluminum surface and watch for the acid to start removing the top layers from the aluminum.
Mix one part acid with three parts water in a bucket to create a 25 percent solution.
If the paint on the siding above masonry is chalking it washes down onto the masonry and stains the surface.
It is reasonably safe for the aluminum and fairly easy to come by.
From a cr80 cylinder after a seizure.
In most cases you need to scrub the surface with a chemical cleaner.
Motors s table of corrosive chemicals hydrochloric and sulfuric acids are known to damage aluminum parts in motors drives and gears.