Peracetic acid
Peracetic acid (also known as peroxyacetic acid, or PAA), is a organic compound with the formula CH3CO3H. This organic peroxide is a colorless liquid with a characteristic acrid odor reminiscent of acetic acid. It can be highly corrosive, and is a powerful oxidizing agent.
Production[edit]
Peracetic acid is produced industrially by the autoxidation of acetaldehyde.
- CH3CHO + O2 → CH3CO3H
It forms upon treatment of acetic acid with hydrogen peroxide, especially in the presence of sulfuric acid:
- CH3CO2H + H2O2 → CH3CO3H + H2O
Applications[edit]
Peracetic acid is a versatile oxidizing agent that has found use in a variety of applications. It is mainly available in solutions of acetic acid and hydrogen peroxide, with these solutions containing up to 40% peracetic acid by weight.
Disinfectant and biocide[edit]
Peracetic acid is used mainly in the food industry, where it is applied as a disinfectant. It is also used for the disinfection of medical supplies, to prevent biofilm formation in pulp industries, and as a water disinfectant. It is also used in the dairy industry for milk production.
Bleaching[edit]
Peracetic acid is used for the bleaching of textiles, paper, and in the chemical industry.
Safety[edit]
Peracetic acid is a strong oxidizer and can be highly corrosive. It can cause irritation to the skin, eyes, and respiratory system. It is classified as a hazardous substance in many countries, and its use is regulated.
See also[edit]
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