Is Peracetic acid (PAA / peroxyacetic acid) safe for babies and kids?
Moderate risk for kidsInfants are more vulnerable to Peracetic acid (PAA / peroxyacetic acid) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.
What is peracetic acid (paa / peroxyacetic acid)?
The IUPAC name is ethaneperoxoic acid.
Also known as: PERACETIC ACID, Peroxyacetic acid, Ethaneperoxoic acid, 79-21-0.
- IUPAC name
- ethaneperoxoic acid
- CAS number
- 79-21-0
- Molecular formula
- C2H4O3
- Molecular weight
- 76.05 g/mol
- SMILES
- CC(=O)OO
- PubChem CID
- 6585
Risk for babies
Moderate riskInfants are more vulnerable to Peracetic acid (PAA / peroxyacetic acid) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.
Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.
Risk for pregnant and nursing people
Context-dependentPregnancy alters the metabolism and distribution of Peracetic acid (PAA / peroxyacetic acid), potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.
No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.
Regulatory consensus
4 regulatory and scientific bodies have classified Peracetic acid (PAA / peroxyacetic acid). The classifications differ — that's the data.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| EPA | — | Registered antimicrobial pesticide under FIFRA | |
| USDA | — | Approved antimicrobial for organic food processing (NOP) | |
| FDA | — | GRAS components (acetic acid, H2O2). FDA-cleared for food-contact sanitizing. 510(k) cleared high-level disinfectant for medical devices | |
| EU BPR | — | Approved active substance under BPR 528/2012, Product Types 1-5, 11, 12 |
Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.
Where kids encounter peracetic acid (paa / peroxyacetic acid)
- Food Processing — Poultry carcass antimicrobial rinse (USDA approved), Produce wash, Dairy CIP sanitizer, Brewery/winery sanitation
- Healthcare — Endoscope reprocessing (Perasafe, Nu-Cidex), Surface disinfection
- Water Treatment — Wastewater tertiary disinfection (replacing chlorine), Cooling tower biocide
- Agriculture — Post-harvest fruit/vegetable treatment, Irrigation water disinfection
Safer alternatives
Lower-risk approaches that achieve a similar outcome to Peracetic acid (PAA / peroxyacetic acid):
-
Chlorine dioxide (ClO2)
Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.Relative cost: 1.2-2×
-
Hypochlorous acid (HOCl)
Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.Relative cost: 1.2-2×
Frequently asked questions
Is peracetic acid (paa / peroxyacetic acid) safe for kids?
Infants are more vulnerable to Peracetic acid (PAA / peroxyacetic acid) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.
What products contain peracetic acid (paa / peroxyacetic acid)?
Peracetic acid (PAA / peroxyacetic acid) appears in: Poultry carcass antimicrobial rinse (USDA approved) (Food processing); Produce wash (Food processing); Endoscope reprocessing (Perasafe, Nu-Cidex) (Healthcare); Surface disinfection (Healthcare); Wastewater tertiary disinfection (replacing chlorine) (Water treatment).
What should I do if my child is exposed to peracetic acid (paa / peroxyacetic acid)?
Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.
Why do regulators disagree about peracetic acid (paa / peroxyacetic acid)?
Peracetic acid (PAA / peroxyacetic acid) has been classified by 4 agencies including EPA, USDA, FDA, EU BPR, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.
See Peracetic acid (PAA / peroxyacetic acid) in the baby app
Look up products containing peracetic acid (paa / peroxyacetic acid), compare to alternatives, and explore the full data record.
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Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →