Silicate(2-), hexafluoro-, dihydrogen

CAS 16961-83-4

U.S. production volumes are classified as confidential business information.

Molecular structure of 16961-83-4 — 2 H⁺

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$66M

Top sourceChina 46%

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 281119 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 281119, which covers 30 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).

CN 46%ChinaDE 17%GermanyMY 12%MalaysiaKR 5%South KoreaTW 5%Taiwan

Japan
Netherlands
Switzerland
Norway
Jordan
Italy
Czech Republic
United Kingdom

EPA-registered manufacturers (6)

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

Nutrien · CA Canada

Itafos Conda

J.R. Simplot

Momentive Performance Materials Quartz

Nutrien Us Top

Show all 6

The Mosaic

Domestic parents -- activity not disclosed (3)

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

Hawkins

Icl Specialty Products North America

Wego Chemical Group

EPA-registered importers (1)

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

Harcros Chemicals

Why It Matters

Sectors

AgricultureWaterConstructionMetals & MiningConsumer ProductsCore Chemicals

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

Used in 3 sectors as 3 functional roles.

•Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing as a reactant
•pH regulating agent in Soap, Cleaning Compound, and Toilet Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Intermediate in All Other Basic Inorganic Chemical Manufacturing (0%)Processing as a reactant

Chemical Identity

CAS16961-83-4

PubChem CID21863527

DTXSIDDTXSID2029741

FormulaF6H2Si

Mol. Weight144.091 g/mol

SMILES[H+].[H+].F[Si-2](F)(F)(F)(F)F

Data Sources

EPA CompTox (DSSTox) · DTXSID2029741Retrieved 2026-04-06
PubChem · compound 21863527Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Silicate(2-), hexafluoro-, dihydrogen (CAS 16961-83-4) https://chemicalindependence.com/chemical/16961-83-4/ EPA CompTox (DSSTox): DTXSID2029741. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2029741 PubChem: 21863527. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/21863527 EPA Chemical Data Reporting: 16961-83-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 16961-83-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 281119 for CAS 16961-83-4. Reporting year: 2024. https://usatrade.census.gov/