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do you know any other uses not listed on wiki?
And appart from the uses already mentioned, boric acid is a standard cure against sweaty feet !btw, we once worked on a project involving boric acid (as a cross linking agent); but as things did not turn out the way we wished, it got micknamed "boring acid".
I wonder if it helps with sweaty feet what would help with cold feet besides thicker socks, movement, and warm shoes? LOL
Quote from: Karen W. on 13/03/2007 15:11:20I wonder if it helps with sweaty feet what would help with cold feet besides thicker socks, movement, and warm shoes? LOLBlack powder? 
I just added the sweaty feet because Wikipedia did not mention them.I may add two cases (appart from the research project mentioned before) where I have personal experience with boric acid :the use of boric acid as a fire retardant in particle board (relatively high concentrations : about 5 % by weight, added as powder)from the (almost forgotten) days of silver based photography : the use of boric acid to make the prints more water resistant after glazingAs for the sources of boric acid : it is available as a mineral, but most of it comes from crystallization from acidified solutions of borax.