What is "chloroplatinic acid"

n. (context inorganic compound English) An acid, H₂PtCl₆, derived from platinic chloride and hydrochloric acid, used in the analysis of amines.

Chloroplatinic acid or hexachloroplatinic acid is an inorganic compound with the formula [HO][PtCl](HO). A red solid, it is an important commercial source of platinum, usually as an aqueous solution. Although often written in shorthand as HPtCl, it is the hydronium (HO) salt of the hexachloroplatinate anion . The compound is also available as the hexahydrate.