On 8/16/2010 12:18 PM, Han wrote:
"Hustlin' wrote in news:c8391a64-b33b-443a-a75b-
:

Yes, phosphoric acid is also used to etch concrete.

Hank


But phosphoric acid isn't volatile, while muriatic acid is, so cleanup is
more difficult with phosphoric acid.


My response was off the top of my head, but op could have simply googled
and found such as this:

http://www.epoxyproducts.com/acid.html