Is Propionic acid (E280) safe for babies and kids?
Moderate risk for kidsInfants face elevated exposure to Propionic acid (E280) through formula, baby food, and breast milk contamination. Immature hepatic metabolism and higher intake-to-body-weight ratio amplify dose.
What is propionic acid (e280)?
The IUPAC name is propanoic acid.
Also known as: propanoic acid, propionic acid, methylacetic acid, ethylformic acid.
- IUPAC name
- propanoic acid
- CAS number
- 79-09-4
- Molecular formula
- C3H6O2
- Molecular weight
- 74.08 g/mol
- SMILES
- CCC(=O)O
- PubChem CID
- 1032
Risk for babies
Moderate riskInfants face elevated exposure to Propionic acid (E280) through formula, baby food, and breast milk contamination. Immature hepatic metabolism and higher intake-to-body-weight ratio amplify dose.
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 metabolism and increases susceptibility to Propionic acid (E280). Dietary additives consumed during pregnancy cross the placenta; safety margins for adults may not protect the developing fetus.
No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.
Regulatory consensus
3 regulatory and scientific bodies have classified Propionic acid (E280). The classifications differ — that's the data.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| IARC | 2014 | Not evaluated by IARC for carcinogenicity — Propionic acid (E280; CAS 79-09-4; propanoic acid; CH3CH2COOH; MW 74.08) is the parent compound of the E280–E283 propionate preservative group (propionic acid, calcium propionate, sodium propionate, potassium propionate); FDA GRAS (21 CFR 184.1081); EU E280 (limited maximum levels apply — primarily for bread, flour confectionery); EFSA group ADI 3 mg/kg/day as propionic acid equivalents (E280–E283, 2014); a naturally occurring short-chain fatty acid produced by intestinal microbial fermentation and the characteristic fermentation product of Propionibacterium species in Swiss-type cheese; no IARC, EPA, or EFSA carcinogenicity classification | |
| EPA CTX / Genetox | — | Genotoxicity: positive (Ames: positive, 6 positive / 10 negative reports) | |
| EPA CTX / Genetox | — | Genotoxicity: positive (Ames: positive, 6 positive / 10 negative reports) |
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 propionic acid (e280)
- Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
- Occupational Environments — Factories, Warehouses, Transportation vehicles
- Food — processed food, beverages, candy, baked goods
Safer alternatives
Lower-risk approaches that achieve a similar outcome to Propionic acid (E280):
-
Physical/mechanical pest control (IPM)
Trade-offs: More labor-intensive. May not be sufficient for severe infestations.Relative cost: 1.2-2×
Frequently asked questions
Is propionic acid (e280) safe for kids?
Infants face elevated exposure to Propionic acid (E280) through formula, baby food, and breast milk contamination. Immature hepatic metabolism and higher intake-to-body-weight ratio amplify dose.
What products contain propionic acid (e280)?
Propionic acid (E280) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments); processed food (Food).
What should I do if my child is exposed to propionic acid (e280)?
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 propionic acid (e280)?
Propionic acid (E280) has been classified by 3 agencies including IARC, EPA CTX / Genetox, EPA CTX / Genetox, 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 Propionic acid (E280) in the baby app
Look up products containing propionic acid (e280), compare to alternatives, and explore the full data record.
Open in baby View raw API dataSources (1)
- Propionic Acid E280 CAS 79-09-4 CH3CH2COOH pKa 4.87 E280-E283 Group ADI 3 mg/kg/day; EFSA 2014; FDA GRAS 21 CFR 184.1081; Swiss Cheese 1-2% Propionibacterium Freudenreichii Shermanii Lactate Fermentation; Gut Microbiota Bacteroides Veillonella SCFA Portal Vein 3-4 µM; Succinyl-CoA TCA Propionyl-CoA Methylmalonyl-CoA Pathway; Propionic Acidemia PA Methylmalonic Acidemia MMA Rare Inborn Error Metabolic Acidosis; Grain Preservation High-Moisture Animal Feed; Propanoate Ester Fruit Flavors; Herbicide Fenoprop Intermediate; Autism ICV Injection Controversy Physiologically Irrelevant (2014) — regulatory
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 →