2-Methylpropanal

CAS 78-84-2

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$90M

Top sourceGermany 34%

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 291219 · basket

EPA reports by year

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

These shares come from HS customs code 291219, which covers 130 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).

DE 34%GermanyCN 29%ChinaIN 13%IndiaIT 8%ItalyGB 4%United Kingdom

Brazil
Portugal
Austria
Hungary
Sweden
Philippines
Singapore
Netherlands
Indonesia
Australia
Slovakia
Romania
Ukraine
Hong Kong
Ireland
Vietnam

EPA-registered manufacturers (5)

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

Basf

Dow Chemical

Lyondell Chemical

Oq Chemicals

Domestic parents -- activity not disclosed (2)

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

Eastman Chemical

The Chemical

Why It Matters

Sectors

Plastics & RubberCore 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 4 sectors as 1 functional role.

•Intermediate in Petrochemical Manufacturing (100%)Processing as a reactant
•Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
•Intermediate in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
•Intermediate in Plastics Material and Resin ManufacturingProcessing as a reactant

Vendor Pricing

$0.03/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$674.11 / 20 kg

Purity98%

Vendors11 available

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

10 more vendors

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich	Germany	$0.03	20 kg	98%
Fluorochem UK	United Kingdom	$0.15	500 g	99%
A2B Chem LLC (1 week)	United States	$0.29	500 g	93%
AA BLOCKS (1 week)	United States	$0.49	500 g	99%
Interbioscreen	Hong Kong	$24.00	10 g	95%
Labotest KG	Germany	$217.80	5000 mg	90%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	95%
Asinex	Netherlands	$8651.50	100 mg	90%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS78-84-2

PubChem CID6561

DTXSIDDTXSID9021635

FormulaC4H8O

Mol. Weight72.11 g/mol

SMILESCC(C)C=O

Data Sources

EPA CompTox (DSSTox) · DTXSID9021635Retrieved 2026-04-06
PubChem · compound 6561Retrieved 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

2-Methylpropanal (CAS 78-84-2) https://chemicalindependence.com/chemical/78-84-2/ EPA CompTox (DSSTox): DTXSID9021635. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9021635 PubChem: 6561. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6561 EPA Chemical Data Reporting: 78-84-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 78-84-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291219 for CAS 78-84-2. Reporting year: 2024. https://usatrade.census.gov/