Is Ammonium carbonate (baker's ammonia; E503) safe for babies and kids?
Moderate risk for kidsInfants are more vulnerable to Ammonium carbonate (baker's ammonia; E503) 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 ammonium carbonate (baker's ammonia; e503)?
The IUPAC name is diazanium;carbonate.
Also known as: diazanium;carbonate, AMMONIUM CARBONATE, Diammonium carbonate, Carbonic acid, diammonium salt.
- IUPAC name
- diazanium;carbonate
- CAS number
- 506-87-6
- Molecular formula
- CH8N2O3
- Molecular weight
- 96.09 g/mol
- SMILES
- C(=O)([O-])[O-].[NH4+].[NH4+]
- PubChem CID
- 517111
Risk for babies
Moderate riskInfants are more vulnerable to Ammonium carbonate (baker's ammonia; E503) 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 Ammonium carbonate (baker's ammonia; E503), 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
1 regulatory bodyhas classified Ammonium carbonate (baker's ammonia; E503).
| Agency | Year | Classification | Notes |
|---|---|---|---|
| IARC | 2011 | Not evaluated by IARC for carcinogenicity — Ammonium carbonate (E503i; CAS 506-87-6; (NH4)2CO3; baker's ammonia; hartshorn salt) is EU E503i (ammonium carbonate; ammonium bicarbonate is E503ii) and FDA GRAS (21 CFR 184.1135) as a leavening agent; JECFA ADI 'not specified'; EFSA confirmed safety at current use levels; no IARC, EPA, or EFSA carcinogenicity classification; ammonium carbonate is one of the oldest chemical leavening agents — predating baking powder and baking soda — and functions by complete thermal decomposition at baking temperatures to release ammonia (NH3), carbon dioxide (CO2), and water vapor; all three decomposition products are gases that leaven the baked product and then escape entirely from the finished product (no residue); this makes it impossible to have residual ammonium carbonate in a properly baked product; historically called 'hartshorn salt' (obtained by dry distillation of deer antlers/horns — horns and hooves are rich in keratin protein that decomposes to ammonium carbonate upon pyrolysis) |
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 ammonium carbonate (baker's ammonia; e503)
- Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
- Occupational Environments — Factories, Warehouses, Transportation vehicles
Safer alternatives
Lower-risk approaches that achieve a similar outcome to Ammonium carbonate (baker's ammonia; E503):
-
Fragrance-free formulations
Trade-offs: Consumer preference for scented productsRelative cost: Lower (ingredient elimination)
-
Essential oil-based fragrances (with disclosure)
Trade-offs: Natural does not mean safe — many essential oils are skin sensitizersRelative cost: 2-5× conventional
Frequently asked questions
Is ammonium carbonate (baker's ammonia; e503) safe for kids?
Infants are more vulnerable to Ammonium carbonate (baker's ammonia; E503) 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 ammonium carbonate (baker's ammonia; e503)?
Ammonium carbonate (baker's ammonia; E503) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).
What should I do if my child is exposed to ammonium carbonate (baker's ammonia; e503)?
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 Ammonium carbonate (baker's ammonia; E503) in the baby app
Look up products containing ammonium carbonate (baker's ammonia; e503), compare to alternatives, and explore the full data record.
Open in baby View raw API dataSources (1)
- Ammonium Carbonate CAS 506-87-6 (NH4)2CO3 E503i Baker's Ammonia Hartshorn Salt; FDA GRAS 21 CFR 184.1135; EFSA 2011 ADI Not Specified; Complete Thermal Decomposition 2NH3 + CO2 + H2O No Residue Properly Baked Products; Hartshorn: Deer Antler Destructive Distillation Keratin Collagen Pyrolysis Historical; Medieval Leavening Pre-Baking Powder; Springerle Speculoos Speculaas Lebkuchen Crackers Thin Products Best Use; No Acid Partner Required vs Baking Soda Cream of Tartar; NH3 Smell During Baking Dissipates Completely on Cooling; Smelling Salts Aromatic Ammonia Pharmaceutical Use; Baking Soda Na2CO3 Residue Comparison (2011) — 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 →