Peracetic acid

Definition

Peracetic acid is a potent oxidizing agent used as a disinfectant and sterilant. It is effective against a broad spectrum of microorganisms including bacteria, viruses, fungi, and spores.

5 Must Know Facts For Your Next Test

1. Peracetic acid works through oxidation, which disrupts cell walls and internal structures of microorganisms.
2. It is often used in healthcare settings to sterilize medical instruments and surfaces.
3. Peracetic acid decomposes into non-toxic byproducts: acetic acid, water, and oxygen.
4. It is effective at low concentrations and can work in the presence of organic material.
5. Due to its strong oxidizing nature, it must be handled with care as it can be corrosive to metals and irritating to skin.

Review Questions

• What mechanism does peracetic acid use to kill microorganisms?
• List three environments or applications where peracetic acid is commonly used.
• What are the decomposition products of peracetic acid?

Related terms

Hydrogen Peroxide:

A disinfectant that works by producing free radicals that damage cellular components.

Ethylene Oxide:

A gas used for sterilization of medical devices that cannot withstand high temperatures.

Glutaraldehyde:

A chemical solution used for high-level disinfection and sterilization of medical equipment.