Home Safety / Compounds / Polyethylene terephthalate (PET) fiber

Polyethylene terephthalate (PET) fiber in your home: a safety profile

Moderate risk for your home

(Your Household-specific data is limited; this page draws from human adult context.) Low_to_moderate risk based on available hazard data.

What is polyethylene terephthalate (pet) fiber?

Also known as: Polyethylene terephthalate, Polyethylenterephthalat, polytéréphtalate d'éthylène, بولي إيثيلين تيرفثالات.

CAS number
25038-59-9
SMILES
*-OCCOC(=O)C1=CC=C(C=C1)C(-*)=O |$star_e;;;;;;;;;;;;;;star_e;$,c:9,11,t:7,lp:1:2,4:2,6:2,15:2,Sg:n:1,2,3,4,5,7,12,11,10,9,8,6,13,15::ht|

Risk for your household

Moderate risk

Low_to_moderate risk based on available hazard data.

Regulatory consensus

1 regulatory bodyhas classified Polyethylene terephthalate (PET) fiber.

AgencyYearClassificationNotes
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 your home encounter polyethylene terephthalate (pet) fiber

  • Consumer Products — Plastic bottles and containers, Food packaging
  • Indoor Environments — Off-gassing from plastic products

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Polyethylene terephthalate (PET) fiber:

  • 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

What products contain polyethylene terephthalate (pet) fiber?

Polyethylene terephthalate (PET) fiber appears in: Plastic bottles and containers (Consumer products); Food packaging (Consumer products); Off-gassing from plastic products (Indoor environments).

See Polyethylene terephthalate (PET) fiber in the home app

Look up products containing polyethylene terephthalate (pet) fiber, compare to alternatives, and explore the full data record.

Open in home View raw API data

Sources (2)
  1. EPA CompTox Chemicals Dashboard — DTXSID10872790 — epa
  2. ATSDR Toxicological Profile — CAS 25038-59-9 — 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 →