Fluorosilicates of sodium or of potassium
Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: > Other: > Fluorosilicates of sodium or of potassium
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
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.
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.