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Carbonic dichloride, polymer with 4,4'-(1-methylethylidene)bis[phenol]

CAS 25971-63-5

Companies reported imports and no US production of this chemical to EPA for 2023.

Molecular structure of 25971-63-5
US productionZero
Import value, 2024$397M
Import volume110 lb
Import dependency100%
Top sourceSouth Korea 26%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Carbonic dichloride, polymer with 4,4'-(1-methylethylidene)bis[phenol] · US import value by year
$206M2013$502M2021$397M2024$320M2025

2013: $206M · Peak 2021: $502M · 2024: $397M · 2025: $320M

Where It Comes From

Customs basis: HS 390740 · basket

EPA reports by year
2023
US production Zero · Imports 110 lb

These shares come from HS customs code 390740, which covers 4 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
KR 26%South KoreaDE 15%GermanyCA 13%CanadaMY 9%MalaysiaMX 9%Mexico

Why It Matters

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

Chemical Identity

CAS25971-63-5
PubChem CIDNot recorded
DTXSIDDTXSID801011424
FormulaNot recorded
Mol. WeightNot recorded
SMILESNot recorded

Data Sources

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Brief citations

Carbonic dichloride, polymer with 4,4'-(1-methylethylidene)bis[phenol] (CAS 25971-63-5) https://chemicalindependence.com/chemical/25971-63-5/ EPA TSCA Inventory: CAS 25971-63-5. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 25971-63-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 390740 for CAS 25971-63-5. Reporting year: 2024. https://usatrade.census.gov/