>Yes, but it will only etch so much copper than then no more
The disposal of spent Ferric Chloride has generated several posts in
newsgroups. From the mixing with washing soda first to the mixing with
cement before disposal in the garbage. Out of curiousity, how many of
us here just flush it down the toilet (and clean the bowl afterwards)
or pour it down the drain with lots of water? I have about two gallons
of it in the garage along with about 20 gallons of used engine oil and
transmission fluid. Waiting for the getup and go to cart them all to
the recycling center.