1,2-Dihydro-2,2,4-trimethylquinoline, polymer

CAS 26780-96-1

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$626M

Top sourceGermany 18%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

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

Where It Comes From

Customs basis: HS 293349, 391190 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Zero · Imports 1.3M lb

These shares come from HS customs code 293349, 391190, which covers 129 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

DE 18%GermanyJP 14%JapanCA 12%CanadaGB 12%United KingdomCN 12%China

Czech Republic
Ireland
Malaysia
Ukraine
Poland
Netherlands
Portugal
Denmark
Saudi Arabia
Brazil
Hong Kong
Australia
Trinidad and Tobago
Israel
Lithuania
Slovenia
Turkey
Ecuador
Honduras
Peru
South Africa
Philippines
Chile
Luxembourg
Dominican Republic
Vietnam
Finland
Greece
United Arab Emirates

Domestic parents -- activity not disclosed (2)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Si Group

Univar Solutions

EPA-registered importers (2)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Cie Gen Des Ets Michelin · FR France

Michelin

Why It Matters

Sectors

Plastics & Rubber

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

•UV stabilizer in Synthetic Rubber Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
•UV stabilizer in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS26780-96-1

PubChem CIDNot recorded

DTXSIDDTXSID5025071

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID5025071Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

← Back to Dashboard ← Back to Plastics & Rubber

Brief citations

1,2-Dihydro-2,2,4-trimethylquinoline, polymer (CAS 26780-96-1) https://chemicalindependence.com/chemical/26780-96-1/ EPA CompTox (DSSTox): DTXSID5025071. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5025071 EPA Chemical Data Reporting: 26780-96-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 26780-96-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293349,391190 for CAS 26780-96-1. Reporting year: 2024. https://usatrade.census.gov/