Rosin, maleated

CAS 8050-28-0

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$41M

Top sourceBrazil 45%

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 380690 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 380690, which covers 7 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).

BR 45%BrazilMX 15%MexicoCN 12%ChinaBE 11%BelgiumNL 8%Netherlands

Japan
Taiwan
South Africa
Greece
Norway

EPA-registered manufacturers (1)

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

Plasmine Technology

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.

Bridgestone · JP Japan

Bridgestone Americas

Why It Matters

Sectors

Plastics & RubberPaper & Printing

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 2 functional roles.

•Sizing agent in Paper Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Rubber Product Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS8050-28-0

PubChem CIDNot recorded

DTXSIDDTXSID2027705

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID2027705Retrieved 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

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Brief citations

Rosin, maleated (CAS 8050-28-0) https://chemicalindependence.com/chemical/8050-28-0/ EPA CompTox (DSSTox): DTXSID2027705. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2027705 EPA Chemical Data Reporting: 8050-28-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 8050-28-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 380690 for CAS 8050-28-0. Reporting year: 2024. https://usatrade.census.gov/