noun
perchloride
Technical term in chemistry for a chloride with the maximum possible chlorine content.
過塩化物は化学実験で酸化剤として使われることがある。
Perchlorides are sometimes used as oxidizing agents in chemical experiments.
塩化物 is a general chloride, while 過塩化物 specifically refers to a perchloride with a higher oxidation state.
Compound of 過 (per-, excess) + 塩化物 (chloride).