Tags: Chemical Compound, Chemical Substance.
Potassium tetraiodomercurate(II) is the inorganic compound consisting potassium cations and the tetraiodomercurate(II) anion. It is mainly used as Nessler’s reagent a 0.09 mol/L solution of potassium tetraiodomercurate(II) (K2[HgI4]) in 2.5 mol/L potassium hydroxide used to detect ammonia.