1,3-Butadiene

CAS 106-99-0

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$168M

Top sourceSouth Korea 29%

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.

Where It Comes From

Customs basis: HS 290124 · exact

EPA reports by year

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

Source Countries

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

KR 29%South KoreaBR 29%BrazilCA 21%CanadaNL 8%NetherlandsTW 6%Taiwan

Switzerland

EPA-registered manufacturers (13)

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

Basf Se · DE Germany

Ineos · GB United Kingdom

Shell Plc · GB United Kingdom

Shin-Etsu Chemical · JP Japan

Basf

Show all 13

Dexco Polymers

Gulf Coast Growth Ventures

Ineos Us I

Lyondell Chemical

Shell Petroleum

Shintech Louisiana

Tpc Group

Westlake

Domestic parents -- activity not disclosed (5)

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

ExxonMobil

Indorama Ventures Usa Holdings

Kraton

Lion Copolymer Holdings

EPA-registered importers (11)

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

Arlanxeo Holding Bv · NL Netherlands

Mapei · IT Italy

Arlanxeo Usa Llc-Hq

Dow Chemical

Exxonmobil Product Solutions, A Div Of Exxon Mobil

Show all 11

Gunvor Usa

Koch Industries

Mitsubishi Corporation (Americas)

Polyglass Usa

Tartan Oil

The Goodyear Tire & Rubber

Why It Matters

Sectors

EnergyConstructionPlastics & RubberConsumer ProductsCore Chemicals

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 10 sectors as 5 functional roles.

•Intermediate in Petrochemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Monomers in Plastics Product Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
•Monomers in Synthetic Rubber Manufacturing (70%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Plastics Material and Resin Manufacturing (20%)Processing as a reactant
•Intermediate in Synthetic Rubber Manufacturing (80%)Processing as a reactant
•Hardener in Rubber Product Manufacturing (100%)Processing—incorporation into article
•Monomers in Rubber Product Manufacturing (100%)Processing—incorporation into article
•Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
•Monomers in Plastics Material and Resin ManufacturingProcessing as a reactant
•Intermediate in Wholesale and Retail Trade (5%)Processing—repackaging
•Plasticizer in Asphalt Paving, Roofing, and Coating Materials Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
•Fuel in Wholesale and Retail Trade (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Organic Fiber Manufacturing (20%)Processing as a reactant
•Fuel in Petroleum Refineries (100%)Use—non-incorporative activities

Vendor Pricing

$0.54/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$538.03 / 1 kg

Purity99%

Vendors3 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

2 more vendors

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich	Germany	$0.54	1 kg	99%
Labotest KG	Germany	$453.00	1000 mg	90%

Chemical Identity

CAS106-99-0

PubChem CID7845

DTXSIDDTXSID3020203

FormulaC4H6

Mol. Weight54.09 g/mol

SMILESC=CC=C

Data Sources

EPA CompTox (DSSTox) · DTXSID3020203Retrieved 2026-04-06
PubChem · compound 7845Retrieved 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

1,3-Butadiene (CAS 106-99-0) https://chemicalindependence.com/chemical/106-99-0/ EPA CompTox (DSSTox): DTXSID3020203. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3020203 PubChem: 7845. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7845 EPA Chemical Data Reporting: 106-99-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 106-99-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290124 for CAS 106-99-0. Reporting year: 2024. https://usatrade.census.gov/