Baby Safety / Compounds / TCPP (Tris(1-chloro-2-propyl) phosphate)

Is TCPP (Tris(1-chloro-2-propyl) phosphate) safe for babies and kids?

Elevated risk for kids

Infants face disproportionate exposure to TCPP (Tris(1-chloro-2-propyl) phosphate) through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

What is tcpp (tris(1-chloro-2-propyl) phosphate)?

The IUPAC name is tris(1-chloropropan-2-yl) phosphate.

Also known as: tris(1-chloropropan-2-yl) phosphate, Amgard TMCP, TRIS(2-CHLOROISOPROPYL)PHOSPHATE, Hostaflam OP 820.

IUPAC name: tris(1-chloropropan-2-yl) phosphate
CAS number: 13674-84-5
Molecular formula: C9H18Cl3O4P
Molecular weight: 327.6 g/mol
SMILES: CC(CCl)OP(=O)(OC(C)CCl)OC(C)CCl
PubChem CID: 26176

Risk for babies

Elevated risk

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

Elevated risk

Prenatal exposure to TCPP (Tris(1-chloro-2-propyl) phosphate) through dust inhalation and dietary intake can affect fetal thyroid function and neurodevelopment. Flame retardants accumulate in breast milk.

Suspected reproductive toxicant (GHS H361) or suspected endocrine disruptor. Precautionary approach warranted. Animal studies or limited human data suggest developmental toxicity potential.

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

Regulatory consensus

10 regulatory and scientific bodies have classified TCPP (Tris(1-chloro-2-propyl) phosphate). The classifications differ — that's the data.

Agency	Year	Classification
EPA CTX / Genetox	—	Genotoxicity: positive (Ames: negative, 1 positive / 12 negative reports)
EPA CTX / Genetox	—	Genotoxicity: positive (Ames: negative, 1 positive / 12 negative reports)
EPA CTX / Skin-Eye	—	Skin Irritation: SkinIrr2 (score: high)
EPA CTX / Skin-Eye	—	Eye Irritation: Not classified (score: low)
EPA CTX / Skin-Eye	—	Skin Irritation: Not classified (score: low)
EPA CTX / Skin-Eye	—	skin sensitisation: in vivo (LLNA): Not likely to be sensitizing (score: low)
EPA CTX / Skin-Eye	—	skin sensitisation: in vivo (non-LLNA): Not likely to be sensitizing (score: low)
EPA CTX / Skin-Eye	—	eye irritation: in vivo: Studies Indicate No Significant Irritation (score: low)
EPA CTX / Skin-Eye	—	skin irritation: in vivo: Studies Indicate No Significant Irritation (score: low)
EPA CTX / Skin-Eye	—	skin irritation: in vivo: Moderate or Mild Irritation (score: moderate)

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 tcpp (tris(1-chloro-2-propyl) phosphate)

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 TCPP (Tris(1-chloro-2-propyl) phosphate):

Inherently flame-resistant materials (wool, modacrylic, Nomex)
Trade-offs: Higher material cost. Limited color/texture options.

Relative cost: 1.2-2×
Barrier fabric technology
Trade-offs: Adds manufacturing step and cost

Relative cost: 1.2-2×

Frequently asked questions

Is tcpp (tris(1-chloro-2-propyl) phosphate) safe for kids?

What products contain tcpp (tris(1-chloro-2-propyl) phosphate)?

TCPP (Tris(1-chloro-2-propyl) phosphate) 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 tcpp (tris(1-chloro-2-propyl) 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.

Why do regulators disagree about tcpp (tris(1-chloro-2-propyl) phosphate)?

TCPP (Tris(1-chloro-2-propyl) phosphate) has been classified by 10 agencies including EPA CTX / Genetox, EPA CTX / Genetox, EPA CTX / Skin-Eye, EPA CTX / Skin-Eye, EPA CTX / Skin-Eye, 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 TCPP (Tris(1-chloro-2-propyl) phosphate) in the baby app

Look up products containing tcpp (tris(1-chloro-2-propyl) phosphate), compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)

EU Risk Assessment Report: Tris(1-chloro-2-propyl) Phosphate (TCPP), European Chemicals Bureau, Risk to Aquatic Environment, Indoor Air and Dust Exposure, Thyroid Disruption Concern (2008) (2008) — regulatory
ECHA REACH Restriction Proposal: Organophosphate Flame Retardants (TCPP, TCEP, TDCPP) in Foam Articles — DOSSIER, Children's Products Priority, Urinary Biomarker Data, NHANES and European Biomonitoring (2021) (2021) — 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 →