Chlorous acid, Perchloric acid, Nitric acid
Chloric acid is thermodynamically unstable with respect to disproportionation.
Chloric acid is stable in cold aqueous solution up to a concentration of approximately 30%, and solution of up to 40% can be prepared by careful evaporation under reduced pressure. Above these concentrations, chloric acid solutions decompose to give a variety of products, for example:8HClO3 → 4HClO4 + 2H2O + 2Cl2 + 3 O23HClO3 → HClO4 + H2O + 2 ClO2
Chloric acid is a powerful oxidizing agent. Most organics and flammables will deflagrate on contact.