Tail gas, petroleum, saturate gas plant mixed stream, C4-rich
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$658M
Top SourceCanada 97%
The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.
Where It Comes From
Customs basis: HS 271113 · basket
These shares come from HS customs code 271113, which covers 15 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.
Source Countries
Country of origin for US imports, from Census customs data (2023).
CA 97%CanadaKR 3%South Korea
- China
- United Kingdom
- United Arab Emirates
- Philippines
- Italy
- Turkey
- Germany
- Sweden
- Netherlands
- Guyana
- Ireland
EPA-registered manufacturers (6)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Chevron
Delek Us Holdings
Marathon Petroleum
Pbf Energy
Shell
Show all 6
Sinclair Oil
Why It Matters
No data available
Chemical Identity
CAS68478-32-0
PubChem CIDNo data available
DTXSIDDTXSID5028613
FormulaNo data available
Mol. WeightNo data available
SMILESNo data available
Data Sources
DTXSID50286132026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
68478-32-02026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv