Sorry, I guess 'alkalinity' isn't the best word to use there. Let's just say any pH above 7, but ideally something that isn't caustic.

I've done a few test before doing simple substitutions from a formula that originally specified acetic acid, but obviously there wasn't any activity to the solution.

I would also be interested if it is possible to formulate a rehalogenating bleach using any EDTA salt in an alkaline environment.