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Sodium hexafluorosilicate

Drug ingredient

CAS 16893-85-9

This drug ingredient has classified U.S. production volumes. EPA withholds the number as confidential business information.

Molecular structure of 16893-85-9
2 Na⁺
US productionCBI
Import value, 2024$87M
Top sourceChina 71%

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 282690 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Zero · Imports 655.9K lb

These shares come from HS customs code 282690, which covers 32 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 71%ChinaKR 12%South KoreaJP 5%JapanDE 4%GermanyBE 3%Belgium
EPA-registered manufacturers (1)
Vibrantz Technologies
Domestic parents -- activity not disclosed (7)
Brenntag
Cascade Columbia
Eckart America
Florida Chemical Supply
Global Chemical Resources
Show all 7
Harcros Chemicals
Textile Rubber & Chemical
EPA-registered importers (9)
Ambyth Chemical
Chemical Distribution Network
Paramount Colors
Pvs Chemicals
Pyrotek
Show all 9
Silver Fern Chemical
The Lincoln Electric
Water Solutions Un
Wego Chemical Group
1 FDA-registered drug labeler
Apex Energetics Inc.

Why It Matters

Sectors
HealthWaterConstructionMetals & MiningConsumer ProductsPaints & Coatings
Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

  • •A01 Cellular Recharge
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 5 sectors as 7 functional roles.

  • •Flocculating agent in Other (0%)Processing—incorporation into formulation, mixture, or reaction product
  • •Cleaning agent in Primary Metal ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Flux agent in Primary Metal Manufacturing (100%)Processing as a reactant
  • •Filler in Machinery ManufacturingUse—non-incorporative activities
  • •Pigment in Other (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Preservative in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Abrasives in Not Known or Reasonably Ascertainable (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS16893-85-9
PubChem CID28127
DTXSIDDTXSID9036933
FormulaF6Na2Si
Mol. Weight188.055 g/mol
SMILESF[Si-2](F)(F)(F)(F)F.[Na+].[Na+]

Data Sources

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Brief citations

Sodium hexafluorosilicate (CAS 16893-85-9) https://chemicalindependence.com/chemical/16893-85-9/ EPA CompTox (DSSTox): DTXSID9036933. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9036933 PubChem: 28127. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/28127 EPA Chemical Data Reporting: 16893-85-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting FDA National Drug Code directory: CAS 16893-85-9. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 282690 for CAS 16893-85-9. Reporting year: 2024. https://usatrade.census.gov/