Baby Safety / Compounds / TBEP

Is TBEP safe for babies and kids?

Context-dependent for kids

Infants face disproportionate exposure to TBEP through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

What is tbep?

Also known as: Tris(2-butoxyethyl) phosphate, TRI(2-BUTOXYETHYL) PHOSPHATE, Tributoxyethyl phosphate, Phosflex T-bep.

CAS number
78-51-3
Molecular formula
C18H39O7P
Molecular weight
398.5 g/mol
SMILES
CCCCOCCOP(=O)(OCCOCCCC)OCCOCCCC
PubChem CID
6540

Risk for babies

Context-dependent

Infants face disproportionate exposure to TBEP through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

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

Regulatory consensus

1 regulatory bodyhas classified TBEP.

AgencyYearClassificationNotes
EDC Assessment—Suspected endocrine disruptor

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 tbep

  • Consumer Products — personal care, cleaning, industrial

Safer alternatives

Lower-risk approaches that achieve a similar outcome to TBEP:

  • Phosphorus-based non-halogenated FRs; Barrier fabrics
    Trade-offs: Eliminates chemical FR entirely through physical design (fire-blocking layers, reduced ignition propensity); requires redesign of existing products; effective per CPSC and TB 117-2013; adopted in California furniture regulation.
    Relative cost: 1.2-2×

Frequently asked questions

Is tbep safe for kids?

Infants face disproportionate exposure to TBEP through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

What products contain tbep?

TBEP appears in: personal care (Consumer products); cleaning (Consumer products).

What should I do if my child is exposed to tbep?

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 TBEP in the baby app

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

Open in baby View raw API data

Sources (1)
  1. PubChem (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 →