Make solution of mercury (II) iodide or chloride?

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Jincai Ma

HgCl2 is water soluble, but its solubility capacity is not that high. for preparing HgCl2 solution, add some solid HgCl2 in water, continueously mix with stir bar, you can get a HgCl2 solution with concentration below its solubility capacity (about 7-8 g/L under RT), However, if your want to obtain a concentration higher than solubility capacity, I have not clue.

T. H. Al-Noor

https://www.revolvy.com/page/Mercury%28II%29-iodide