Technical Grade Potassium Fluorosilicate
Technical-grade K2SiF6 powder serves in aluminum smelting as a flux and degassing agent. It is a potassium fluorosilicate, a defined complex fluorine salt under tariff item 2826.90.00. The product is not excluded by Chapter 28 notes as it is a separate chemical compound.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a simple fluoride rather than a fluorosilicate
Simple fluorides are classified separately from complex fluorine salts.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product's technical grade specifications on the commercial invoice
• Ensure the product is free from organic impurities that could affect classification
• Provide a safety data sheet for handling and transport documentation
Related Products under Tariff item 2826.90.00
Aluminum Fluorotitanate
Aluminum fluorotitanate serves in titanium anodizing processes and is a complex fluorine salt under tariff item 2826.90.00. Its defined inorganic composition excludes it from mixtures or organics. The product is supplied as a solution or powder, meeting Chapter 28 criteria for chemical compounds.
Ammonium Bifluoride
Ammonium bifluoride (NH4HF2) is a complex fluorine salt used as a cleaning agent, etchant for glass and metal etching. It qualifies for tariff item 2826.90.00 as 'other complex fluorine salts' since it is not a simple fluoride. The product meets Chapter 28 criteria as a separate chemical compound.
Barium Fluorosilicate
Barium fluorosilicate (BaSiF6) serves as an insecticide and rodenticide in agricultural applications and is a complex fluorine salt under tariff item 2826.90.00. Its chemical definition as a fluorosilicate places it within this heading. The product meets Chapter 28 criteria as a separate chemical compound.
Cryolite Synthetic
Synthetic cryolite (Na3AlF6) is a key flux in aluminum production, classified as a fluoroaluminate complex fluorine salt in tariff item 2826.90.00. Unlike natural cryolite, this chemically pure synthetic version meets Chapter 28 criteria. The product is a separate chemical compound.
Fluoboric Acid 40% Solution
Fluoboric acid (HBF4), a complex fluorine salt in 40% aqueous solution, is used in metal plating and electronics etching under tariff item 2826.90.00. As tetrafluoroboric acid, it qualifies as 'other complex fluorine salts'. The product meets Chapter 28 criteria as a chemical compound in aqueous solution.
Fluostannic Acid
Fluostannic acid (H2SnF6) is used in tin plating and textile finishing, classified as other complex fluorine salts in tariff item 2826.90.00. It meets all chemical definition notes for Chapter 28. The product is supplied as a corrosive liquid.