Potassium Silicofluoride Crystals
Potassium silicofluoride (K2SiF6) appears as colorless crystals or powder, employed in ceramic production as an anti-foaming agent and flux. Classified under HTS 2826.90.1000 for its status as a fluorosilicate of potassium, a complex fluorine salt per Chapter 28 definitions. It is chemically defined without organic stabilizers.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as other complex fluorine salts
Non-sodium/potassium fluorosilicates or mixtures go to the broader 'other' category within the same heading.
If primarily a complex silicate rather than fluorine salt
Emphasis on silicate properties over fluorine could shift to Chapter 28 silicates if fluorine content is incidental.
If supplied as prepared glass frit additive
Chapter notes exclude glass frit/powder (3207) from Chapter 28, even if containing fluorosilicates.
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Import Tips & Compliance
• Provide Safety Data Sheets (SDS) confirming non-radioactive status; check for REACH-like compliance if from EU; avoid bulk packaging that risks dust contamination
Related Products under HTS 2826.90.10.00
Sodium Silicofluoride Powder
Sodium silicofluoride (Na2SiF6) is a white crystalline powder used primarily as a fluoridating agent in water treatment to prevent tooth decay. It falls under HTS 2826.90.1000 as it is a chemically defined fluorosilicate of sodium, specifically classified among complex fluorine salts in Chapter 28. This inorganic compound meets the criteria for subheading 2852.10 but is explicitly placed here.
Sodium Fluorosilicate 99% Pure Grade
High-purity sodium fluorosilicate (99% Na2SiF6) is supplied for laboratory and pharmaceutical fluoridation applications. It qualifies for HTS 2826.90.1000 as a chemically defined sodium fluorosilicate, distinct from other fluorides or complex salts. Meets Note 1 criteria for inorganic compounds in Chapter 28.
Technical Grade Potassium Fluorosilicate
Technical-grade K2SiF6 powder serves in aluminum smelting as a flux and degassing agent. HTS 2826.90.1000 covers it as a potassium fluorosilicate, a defined complex fluorine salt excluding organo-inorganic compounds per chapter notes.
Sodium Silicofluoride for Water Fluoridation
Granular Na2SiF6 specifically formulated for municipal drinking water fluoridation systems. Falls under HTS 2826.90.1000 as sodium fluorosilicate, chemically defined per subheading note without Chapter 31 exclusions.
K2SiF6 Flux for Ceramics
Potassium fluorosilicate flux powder enhances opacity in ceramic glazes and enamels. Classified in HTS 2826.90.1000 for potassium fluorosilicates, distinct from glass frits excluded by chapter notes.
Reagent Grade Na2SiF6
ACS reagent-grade sodium silicofluoride for analytical chemistry and synthesis. HTS 2826.90.1000 applies to pure, chemically defined sodium fluorosilicates meeting Chapter 28 criteria.