CH3CO3H

CH3CO3H, commonly known as peracetic acid, is an organic compound with the formula C2H4O3. It is a colorless liquid with a sharp, vinegar-like odor and is a highly reactive oxidizer and organic peroxide. In practice it is often sold as an aqueous solution, typically in water or acetic acid, for use as a disinfectant and sterilant in industries such as food processing, healthcare, and water treatment.

Synthesis and forms: Peracetic acid is produced by the equilibrium reaction of acetic acid with hydrogen peroxide, usually in the presence of an acid catalyst. Industrial formulations are stabilized and distributed as aqueous solutions at low to moderate concentrations, with shelf life limited by gradual decomposition.

Properties and handling: Peracetic acid is a strong oxidizer that rapidly oxidizes a wide range of organic compounds. It is miscible with water and decomposes to acetic acid, water, and oxygen over time or upon exposure to heat, light, or catalysts. It can react violently with reducing agents, metals, and many organic materials, and is corrosive to skin and eyes. Handling requires appropriate personal protective equipment, adequate ventilation, and avoidance of contamination with incompatible materials.

Applications and use: It is widely used as a sterilant and sanitizer for equipment and surfaces in the dairy, beverage, pharmaceutical, and medical device industries, as well as in hospital cleaning and food processing environments. Residues typically break down to innocuous products such as acetic acid, water, and oxygen.

Safety and storage: Peracetic acid solutions are stored in corrosion-resistant containers, away from heat, metals, and organic materials. Spills should be contained and neutralized according to institutional safety protocols. It is treated as a hazardous oxidizer, and waste must be managed accordingly.