Baby Safety / Compounds / Diammonium phosphate

Is Diammonium phosphate safe for babies and kids?

Moderate risk for kids

Infants are more vulnerable to Diammonium phosphate 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 diammonium phosphate?

Also known as: DAP, Ammonium hydrogen phosphate, (NH4)2HPO4, Diammonium hydrogen orthophosphate.

CAS number
7783-28-0
Molecular formula
H9N2O4P
Molecular weight
132.06 g/mol
SMILES
[NH4+].[NH4+].OP(=O)([O-])[O-]
PubChem CID
24540

Risk for babies

Moderate risk

Infants are more vulnerable to Diammonium phosphate 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.

What to do: 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.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Diammonium phosphate, 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.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

1 regulatory bodyhas classified Diammonium phosphate.

AgencyYearClassificationNotes
FDA1975GRAS — Generally Recognized as Safe (food-grade applications)

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 diammonium phosphate

  • Agriculture
  • Food
  • Fire Retardant

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Diammonium phosphate:

  • Triple superphosphate (TSP)
    Trade-offs: No nitrogen component. Similar P content. Does not volatilize ammonia.
    Relative cost: Similar
  • Rock phosphate
    Trade-offs: Very slow P release; only effective in acidic soils. Approved for organic farming.
    Relative cost: Similar to DAP

Frequently asked questions

Is diammonium phosphate safe for kids?

Infants are more vulnerable to Diammonium phosphate than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What should I do if my child is exposed to diammonium phosphate?

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 Diammonium phosphate in the baby app

Look up products containing diammonium phosphate, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (1)
  1. ECHA Registration Dossier — Diammonium phosphate — reference

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 →