Hg2I4\mathrm {Hg_2I_4 }Hg2I4
K2HgI4\mathrm{K}_{2} \mathrm{H}_{\mathrm{g}} \mathrm{I}_{4}K2HgI4
K2HgI4+KOH\mathrm{K}_{2} \mathrm{HgI}_{4}+\mathrm{KOH}K2HgI4+KOH
KHgI4+NaOH\mathrm{K} \mathrm{HgI}_{4}+\mathrm{NaOH}KHgI4+NaOH