Gases, petroleum, extractive, C3-5, butene-isobutylene-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$404M
Top SourceCanada 90%
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 271114, 271129 · basket
These shares come from HS customs code 271114, 271129, which covers 94 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 90%CanadaCL 4%ChileMX 1%MexicoKR 1%South Korea
- Italy
- China
- United Kingdom
- Czech Republic
- Poland
- Guyana
- United Arab Emirates
- Turkey
- Germany
- Ireland
- Netherlands
- Belgium
- Japan
- Trinidad and Tobago
- Austria
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.
Ineos · GB United Kingdom
Citgo Holding
Hollyfrontier
Ineos Us I
Lyondell Chemical
Show all 6
Tpc Group
EPA-registered importers (1)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Tpc Group
Why It Matters
No data available
Chemical Identity
CAS68477-42-9
PubChem CIDNo data available
DTXSIDDTXSID3028556
FormulaNo data available
Mol. WeightNo data available
SMILESNo data available
Data Sources
DTXSID30285562026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
68477-42-92026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv