JasonLion said:Yes. There are very significant problems from a chemistry point of view. Chlorine is very reactive and there are very few known ways to stabilize it enough to be safe for transport and handling. All of the know reasonably stable compounds containing chlorine have disadvantages and only one can be formed into tablets that dissolve slowly without becoming either explosive or ineffective.
There is, and it used to be sold. It was excessively expensive though. Melamine, the reagent used for CYA testing, will form a relatively large crystal when combined with CYA, that can be filtered out of the water. There are health risks with the mixture though.brg88tx said:yea, i can't believe no chemist in the world has been able to find a way to eliminate cya.