Ethyl chloroformate

CAS 541-41-3

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$384M

Top sourceMalaysia 21%

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 291590 · basket

EPA reports by year

2023: US production Not published · Imports Not published
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291590, which covers 588 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).

MY 21%MalaysiaDE 13%GermanyNL 13%NetherlandsMX 10%MexicoIT 8%Italy

Singapore
Austria
United Kingdom
Philippines
Canada
Hungary
Turkey
Ukraine
Israel
Denmark
Czech Republic
Slovakia
Norway
Poland
Hong Kong
South Africa
Russia

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.

Altivia Specialty Chemicals

EPA-registered importers (3)

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

Albemarle

Basf

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 ManufacturingProcessing as a reactant

Vendor Pricing

$0.35/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$176.90 / 500 g

Purity97%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich	Germany	$0.35	500 g	97%
Interbioscreen	Hong Kong	$10.00	10 g	95%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	95%

Chemical Identity

CAS541-41-3

PubChem CID10928

DTXSIDDTXSID1027186

FormulaC3H5ClO2

Mol. Weight108.52 g/mol

SMILESCCOC(=O)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID1027186Retrieved 2026-04-06
PubChem · compound 10928Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · 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

Ethyl chloroformate (CAS 541-41-3) https://chemicalindependence.com/chemical/541-41-3/ EPA CompTox (DSSTox): DTXSID1027186. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1027186 PubChem: 10928. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/10928 EPA Chemical Data Reporting: 541-41-3. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 541-41-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291590 for CAS 541-41-3. Reporting year: 2024. https://usatrade.census.gov/