If this acid is your 'friend' I'd hate to see what your enemies would do to you?
Hydrofluoric Acid (SiO2):
[: is a highly toxic and corrosive solution of hydrogen fluoride in water.]
Cleaning paint (inc wheel surfaces) - ten or more years ago this method was widely used by body-shops and detailers to remove water spots from paint surfaces, however, as time progressed, we started to see metallic paints and wheel surfaces darken under the clear coat.
Hydrofluoric acid is also notoriously known to react with glass. On factory aluminium wheel surfaces, acrylic polyurethane finishes or polyester powdered coatings it will occlude (cloud) an indication that the finish surface has been compromised, it also produces micro hairline cracks, and will eventually fail.
It also has the unique ability to dissolve almost all inorganic oxides. In the human body, hydrofluoric acid reacts with calcium and damages nerves, bone, and several organs including the heart and kidneys. It has an NFPA health rating of 3; Short exposure could cause serious temporary or residual injury even though prompt medical attention was given This substance should be handled with extreme care, beyond that accorded to hydrochloric, sulphuric, or other mineral acids
Information resource - http://en.wikipedia.org/wiki/Hydrofluoric_acid
Material Data Sheet - MSDS - http://www.jtbaker.com/msds/englishhtml/H3880.htm
Where do you copy this stuff from (as I have asked like 10 times)? Also your post is nothing new here since this has been talked about years ago on autopia. They (acids) are not more dangerous then most items in your home. Again acids are a great tool (friend) if you use them correctly.