1,3-Dichloropropene

CAS 542-75-6

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$572K

Top sourceSwitzerland 45%

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 382790 · narrow

EPA reports by year

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

These shares come from HS customs code 382790, which covers 3 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).

CH 45%SwitzerlandCN 31%ChinaIL 11%IsraelGB 5%United KingdomIN 4%India

Ireland

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.

Dow Chemical

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

Chemical Identity

CAS542-75-6

PubChem CID24883

DTXSIDDTXSID1022057

FormulaC3H4Cl2

Mol. Weight110.97 g/mol

SMILESC(C=CCl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID1022057Retrieved 2026-04-06
PubChem · compound 24883Retrieved 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-Dichloropropene (CAS 542-75-6) https://chemicalindependence.com/chemical/542-75-6/ EPA CompTox (DSSTox): DTXSID1022057. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1022057 PubChem: 24883. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24883 EPA Chemical Data Reporting: 542-75-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 542-75-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 382790 for CAS 542-75-6. Reporting year: 2024. https://usatrade.census.gov/