On 2/1/2006 at 6:23 PM Sridhar Ayengar wrote:
It's not particularly toxic or corrosive. It
stings a bit on your
hands, but not all that much. It removes oxidation very easily too, and
without much concentration.
That last word may be the key. The MSDS reads "nasty":
http://www.jtbaker.com/msds/englishhtml/t1814.htm