It is reasonably safe for the aluminum and fairly easy to come by.
Muriatic acid on aluminum siding.
Keep in mind that this acid is very dangerous and should be kept away from pets and children.
If the paint on the siding above masonry is chalking it washes down onto the masonry and stains the surface.
Muriatic acid is available at your local hardware store.
For efflorescence and other stubborn stains mix 1 cup of 10 percent muriatic acid in 1 gallon of water.
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.
From a cr80 cylinder after a seizure.
In most cases you need to scrub the surface with a chemical cleaner.
According to the u s.
Muriatic acid otherwise known as hydrochloric acid is a common choice for an acid wash.
It is also toxic to the environment.
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.
Very weak solutions of sulfuric acid will not damage aluminum parts if you keep them at room temperature.