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Hexabromocyclododecane

CAS 25637-99-4

Molecular structure of 25637-99-4
US productionNot reported
Import value, 2024$6.1B
Top sourceJapan 32%

EPA lists this chemical for 2019 but publishes zero or no volume for both production and imports.

Why supply is unknown

Production is reported production, not a complete census of factories. 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 Not published · Imports Not published

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
JP 32%JapanKR 27%South KoreaDE 8%GermanyCA 6%CanadaCN 4%China
Domestic parents -- activity not disclosed (1)
Lanxess

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS25637-99-4
PubChem CID33121
DTXSIDDTXSID8025383
FormulaC12H18Br6
Mol. Weight641.7 g/mol
SMILESC1C(CC(CC(CC(CC(CC1Br)Br)Br)Br)Br)Br

Data Sources

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Brief citations

Hexabromocyclododecane (CAS 25637-99-4) https://chemicalindependence.com/chemical/25637-99-4/ EPA CompTox (DSSTox): DTXSID8025383. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8025383 PubChem: 33121. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/33121 EPA Chemical Data Reporting: 25637-99-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290389,382499 for CAS 25637-99-4. Reporting year: 2024. https://usatrade.census.gov/