Category
Chemical Primary Standard
CAS Number
7601-90-3
Molecular Formula
ClHO4
Molecular Weight
100.45
Synonym

perchloric acid perchlorsaeure acids, perchloric perchloric acid (substance) ueberchlorsaeure ClHO4 perchloric acids HClO4 acid, perchloric perchlorates

Keywords
Miscellaneous compounds
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Perchloric acid (HClO₄) is a colorless, strongly acidic, and highly oxidizing inorganic acid—one of the strongest common mineral acids. In dilute aqueous solution it dissociates completely; concentrated solutions and hot perchloric acid are dangerously reactive and can form explosive perchlorate salts or violently oxidize organic materials. It’s used in analytical chemistry and industry but requires strict safety controls (explosion-proof equipment, proper ventilation, and avoidance of organic contaminants).