Dimethylbutadiene

CAS 513-81-5

1,3-Butadiene, 2,3-dimethyl-

Used in 1 industrial sector tracked by the EPA.

US production1.1M lb

Import volumeZero

Import dependency0%

Top sourceNo public record

Production is reported production, not a complete census of factories. 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 290129 · basket

EPA reports by year

2023: US production 1.1M lb · Imports Zero

HS customs code 290129 covers 108 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

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.

Archer Daniels Midland

Why It Matters

Sectors

Core 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

•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.16/gAaron Chemicals LLC

CountryHong Kong

Pack$540.00 / 250 g

Purity98%

Vendors12 available

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

11 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$2.18	250 g	98%
Combi-Blocks, Inc.	United States	$2.95	100 g	97%
A2B Chem LLC	United States	$3.17	100 g	97%
AA BLOCKS	United States	$3.35	100 g	97%
ALFA AESAR	Germany	$3.60	50 g	98%
AK Scientific, Inc.	United States	$7.80	5 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$9.21	50 g	98%
Sigma-Aldrich	Germany	$9.21	50 g	98%
Angene International Limited	United States	$19.20	5 g	98%
Labotest KG	Germany	$217.80	5000 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS513-81-5

PubChem CIDNot recorded

DTXSIDDTXSID2022046

FormulaC6H10

Mol. Weight82.146 g/mol

SMILESCC(=C)C(C)=C

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Dimethylbutadiene (CAS 513-81-5) https://chemicalindependence.com/chemical/513-81-5/ EPA TSCA Inventory: CAS 513-81-5. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 513-81-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 513-81-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting