Hydrocarbons, C2-4, C3-rich

CAS 68476-49-3

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$114M

Import volumeZero

Top sourceCanada 67%

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 271119, 271129 · basket

EPA reports by year

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

These shares come from HS customs code 271119, 271129, which covers 118 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).

CA 67%CanadaCL 15%ChileKR 8%South KoreaIT 1%ItalyGB 1%United Kingdom

China
Poland
Guyana
Taiwan
United Arab Emirates
Turkey
Germany
Trinidad and Tobago
Netherlands
Ireland
Belgium
Qatar
Japan
Switzerland

EPA-registered manufacturers (4)

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

Saudi Arabian Oil · SA Saudi Arabia

Calumet Specialty Products Partners

Lyondell Chemical

Motiva Enterprises

Why It Matters

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

Chemical Identity

CAS68476-49-3

PubChem CIDNot recorded

DTXSIDDTXSID5028538

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA CompTox (DSSTox) · DTXSID5028538Retrieved 2026-04-06
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

Hydrocarbons, C2-4, C3-rich (CAS 68476-49-3) https://chemicalindependence.com/chemical/68476-49-3/ EPA CompTox (DSSTox): DTXSID5028538. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5028538 EPA Chemical Data Reporting: 68476-49-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 271119,271129 for CAS 68476-49-3. Reporting year: 2024. https://usatrade.census.gov/