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Perfluoroheptane

CAS 335-57-9

Heptane, 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-hexadecafluoro-

Molecular structure of 335-57-9
US productionNot reported
Import value, 2024$12M
Top sourceJapan 56%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290349 · basket

These shares come from HS customs code 290349, which covers 14 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
JP 56%JapanCN 28%ChinaGB 11%United KingdomTW 3%TaiwanIT 1%Italy

Why It Matters

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

Chemical Identity

CAS335-57-9
PubChem CIDNot recorded
DTXSIDDTXSID8052019
FormulaC7F16
Mol. Weight388.051 g/mol
SMILESFC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F

Data Sources

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Brief citations

Perfluoroheptane (CAS 335-57-9) https://chemicalindependence.com/chemical/335-57-9/ EPA TSCA Inventory: CAS 335-57-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 290349 for CAS 335-57-9. Reporting year: 2024. https://usatrade.census.gov/