Methacrylaldehyde

CAS 78-85-3

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

Import volumeZero

Top sourceGermany 34%

At least one company claimed its 2019 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: 2019. 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

2019: US production Confidential · Imports Zero

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 (1)

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

Futurefuel

Why It Matters

Sectors

Agriculture

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 Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$3.20/gCombi-Blocks, Inc.

CountryUnited States

Pack$320.00 / 100 g

Purity95%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$3.44	100 g	95%
AA BLOCKS	United States	$3.63	100 g	95%
Fluorochem UK	United Kingdom	$4.75	25 g	95%
AstaTech, Inc	United States	$9.80	5 g	90%

Chemical Identity

CAS78-85-3

PubChem CID6562

DTXSIDDTXSID0052540

FormulaC4H6O

Mol. Weight70.09 g/mol

SMILESCC(=C)C=O

Data Sources

EPA CompTox (DSSTox) · DTXSID0052540Retrieved 2026-04-06
PubChem · compound 6562Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Methacrylaldehyde (CAS 78-85-3) https://chemicalindependence.com/chemical/78-85-3/ EPA CompTox (DSSTox): DTXSID0052540. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0052540 PubChem: 6562. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6562 EPA Chemical Data Reporting: 78-85-3. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 78-85-3. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291219 for CAS 78-85-3. Reporting year: 2024. https://usatrade.census.gov/