1,2,5,6,9,10-Hexabromocyclododecane

CAS 3194-55-6

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$6.1B

Top sourceJapan 32%

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 290389, 382499 · basket

EPA reports by year

2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290389, 382499, which covers 225 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).

JP 32%JapanKR 27%South KoreaDE 8%GermanyCA 6%CanadaCN 4%China

Liechtenstein
Indonesia
Chile
Ireland
Vietnam
Austria
Brazil
Colombia
Israel
Australia
United Arab Emirates
Bosnia and Herzegovina
Turkey
Denmark
South Africa
Philippines
Norway
Hungary
Czech Republic
El Salvador
New Zealand
Slovenia
Morocco
Monaco
Saudi Arabia
Finland
Argentina
Ukraine
Egypt
Oman
Portugal
Slovakia
Qatar
Lebanon
Estonia
Serbia
Costa Rica
Belarus
Hong Kong
Croatia
Luxembourg
Cambodia
Bulgaria
Greece
Uruguay
Romania
Tunisia
Peru
Zimbabwe
Russia
Dominican Republic
Georgia
Malta
Sri Lanka
Jamaica
Armenia

Domestic parents -- activity not disclosed (1)

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

Dow Chemical

EPA-registered importers (2)

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

Lg Chem · KR South Korea

Lg Chem America

Why It Matters

Sectors

Plastics & Rubber

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

•Flame retardant in Plastics Product Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS3194-55-6

PubChem CID18529

DTXSIDDTXSID4027527

FormulaC12H18Br6

Mol. Weight641.7 g/mol

SMILESC1CC(C(CCC(C(CCC(C1Br)Br)Br)Br)Br)Br

Data Sources

EPA CompTox (DSSTox) · DTXSID4027527Retrieved 2026-04-06
PubChem · compound 18529Retrieved 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

1,2,5,6,9,10-Hexabromocyclododecane (CAS 3194-55-6) https://chemicalindependence.com/chemical/3194-55-6/ EPA CompTox (DSSTox): DTXSID4027527. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4027527 PubChem: 18529. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/18529 EPA Chemical Data Reporting: 3194-55-6. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3194-55-6. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290389,382499 for CAS 3194-55-6. Reporting year: 2024. https://usatrade.census.gov/