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1-Octadecanaminium, N,N,N-trimethyl-, methyl sulfate (1:1)

CAS 18684-11-2

Molecular structure of 18684-11-2
US productionNot reported
Import value, 2024$108M
Top sourceChina 14%

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 292390 · basket

These shares come from HS customs code 292390, which covers 130 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 14%ChinaGB 13%United KingdomDE 11%GermanyIN 10%IndiaTW 10%Taiwan

Why It Matters

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

Chemical Identity

CAS18684-11-2
PubChem CIDNot recorded
DTXSIDDTXSID90885065
FormulaC22H49NO4S
Mol. Weight423.7 g/mol
SMILESCOS([O-])(=O)=O.CCCCCCCCCCCCCCCCCC[N+](C)(C)C

Data Sources

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Brief citations

1-Octadecanaminium, N,N,N-trimethyl-, methyl sulfate (1:1) (CAS 18684-11-2) https://chemicalindependence.com/chemical/18684-11-2/ EPA TSCA Inventory: CAS 18684-11-2. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 292390 for CAS 18684-11-2. Reporting year: 2024. https://usatrade.census.gov/