Is Sodium metabisulfite safe for babies and kids?
Elevated risk for kidsInfants are exposed to Sodium metabisulfite through personal care products (lotions, wipes) and food. Immature skin barrier and hepatic metabolism increase effective dose per body weight.
What is sodium metabisulfite?
Also known as: Sodium pyrosulfite, Sodium disulfite, Disodium pyrosulfite, Natrii disulfis.
- CAS number
- 7681-57-4
- Molecular formula
- Na2O5S2
- Molecular weight
- 190.11 g/mol
- SMILES
- [O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
- PubChem CID
- 656671
Risk for babies
Elevated riskInfants are exposed to Sodium metabisulfite through personal care products (lotions, wipes) and food. Immature skin barrier and hepatic metabolism increase effective dose per body weight.
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-dependentPrenatal exposure to Sodium metabisulfite through personal care products and food is a concern. Some preservatives (parabens) exhibit weak estrogenic activity that may affect fetal endocrine development.
No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.
Regulatory consensus
1 regulatory bodyhas classified Sodium metabisulfite.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| Unknown | — | — |
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 sodium metabisulfite
- Food — wine, dried fruit, juice, pickled foods
- Consumer Products — pharmaceuticals
Safer alternatives
Lower-risk approaches that achieve a similar outcome to Sodium metabisulfite:
-
Ascorbic acid
Trade-offs: Alternative preservation system; spectrum of antimicrobial activity differs (gram+/gram-, yeasts, molds); pH range of efficacy varies; challenge testing per ISO 11930 required for cosmetics.Relative cost: 1.2-2×
-
Erythorbic acid
Trade-offs: Alternative preservation system; spectrum of antimicrobial activity differs (gram+/gram-, yeasts, molds); pH range of efficacy varies; challenge testing per ISO 11930 required for cosmetics.Relative cost: 1.2-2×
-
Citric acid
Trade-offs: Alternative preservation system; spectrum of antimicrobial activity differs (gram+/gram-, yeasts, molds); pH range of efficacy varies; challenge testing per ISO 11930 required for cosmetics.Relative cost: 1.2-2×
Frequently asked questions
Is sodium metabisulfite safe for kids?
Infants are exposed to Sodium metabisulfite through personal care products (lotions, wipes) and food. Immature skin barrier and hepatic metabolism increase effective dose per body weight.
What products contain sodium metabisulfite?
Sodium metabisulfite appears in: wine (Food); dried fruit (Food); pharmaceuticals (Consumer products).
What should I do if my child is exposed to sodium metabisulfite?
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.
See Sodium metabisulfite in the baby app
Look up products containing sodium metabisulfite, compare to alternatives, and explore the full data record.
Open in baby View raw API dataSources (1)
- PubChem Compound Database (2026) — database
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 →