In article , w_tom wrote:
Calcium Chloride was used to break up ice last winter. It
is now inside plywood and causes that wood to constantly
become wet. How does one neutralize or remove CaCl from
construction lumber. Removal, unfortunately is not an
option. Mold or mildew would be the long term adverse
consequence. How is CaCl neutralized?

By rinsing with *lots* of water.

It's a salt. Which means that, chemically speaking, it's a *very* stable
compound. Which in turn means that it won't react with too much of anything.
Nearly all chlorides are soluble in water. IIRC, one of the exceptions is iron
chloride, in which case soaking with a solution of iron sulfite might do the
trick, by producing (soluble) calcium sulfite and (insoluble) iron chloride.

But you're probably better off to find some way to replace the plywood.