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CAS 79-21-0

Peracetic acid

PesticidesCorrosive

Peracetic acid (peroxyacetic acid) is a powerful disinfectant used in healthcare, food processing, and water treatment; it breaks down to acetic acid, oxygen, and water [1]. It is highly irritating and corrosive; even low air levels can bother eyes and lungs [1][2].

Where It Comes From

Made from acetic acid and hydrogen peroxide; sold as mixtures for sanitizing equipment, produce, and wastewater [1].

How You Are Exposed

Breathing vapors or mists during mixing, spraying, or fogging; skin or eye contact with solutions—mostly at work, occasionally from specialty cleaners at home [2][3].

Why It Matters

Causes burning eyes, nose, and throat, cough, wheeze, and skin burns; high exposures can lead to severe lung injury and permanent eye damage [2][3].

Who Is at Risk

Workers who reprocess medical devices, sanitize food and beverage facilities, or treat wastewater; people with asthma; those in small, poorly ventilated rooms [1][3].

How to Lower Your Exposure

Use closed systems and local exhaust; avoid spraying/fogging when possible; wear chemical-resistant gloves, goggles/face shield, and protective clothing; never mix disinfectants (especially with bleach or ammonia); ventilate well and follow the label [1][2][3].

References

  1. [1]U.S. Environmental Protection Agency (EPA). Biopesticide Registration Action Document: Peroxyacetic Acid (PAA). Office of Pesticide Programs.
  2. [2]International Chemical Safety Cards (ICSC) 0398: Peracetic acid. World Health Organization/International Labour Organization.
  3. [3]CDC/NIOSH. Protecting Workers Who Use Cleaning Chemicals. DHHS (NIOSH) Publication No. 2012-151.

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