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2H-Azepin-2-one, 1-ethenylhexahydro-, homopolymer

CAS 25189-83-7

Molecular structure of 25189-83-7
US productionNot reported
Import value, 2024$907M
Top sourceIreland 47%

EPA exempts this chemical from its production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293379 · basket

These shares come from HS customs code 293379, which covers 105 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 47%IrelandBE 19%BelgiumSG 11%SingaporeIT 4%ItalyCH 4%Switzerland

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS25189-83-7
PubChem CIDNot recorded
DTXSIDDTXSID901011110
FormulaNot recorded
Mol. WeightNot recorded
SMILESNot recorded

Data Sources

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Brief citations

2H-Azepin-2-one, 1-ethenylhexahydro-, homopolymer (CAS 25189-83-7) https://chemicalindependence.com/chemical/25189-83-7/ EPA TSCA Inventory: CAS 25189-83-7. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293379 for CAS 25189-83-7. Reporting year: 2024. https://usatrade.census.gov/