Product classification
HS code for Fluorosilicates: 2826.90
Fluorides, fluorosilicates, fluoroaluminates and other complex fluorine salts, n.e.c. in heading no. 2826.
Classification of fluorosilicates under HS 2826.90
Fluorosilicates are classified under HS code 2826.90, which serves as the residual category for complex fluorine salts. Chapter 28 covers inorganic chemicals, and heading 2826 is dedicated to fluorides, fluorosilicates, fluoroaluminates, and other complex fluorine salts. While simple fluorides (like ammonium or sodium fluoride) have their own specific subheadings (2826.11 through 2826.19), complex salts where fluorine is bonded with silicon and another metal (like sodium or magnesium) fall into the residual subheading 2826.90. These substances are often used in water treatment, wood preservation, and the manufacture of ceramics. The classification is driven by the chemical structure of the salt; specifically, the presence of the hexafluorosilicate ion (SiF6). According to the Explanatory Notes to the Harmonized System, this heading includes complex salts but excludes natural complex fluorides like cryolite, which is classified in Chapter 25. The technical distinction between a simple fluoride and a complex fluorosilicate is the presence of a central non-metal or metal atom (like Silicon) coordinated with fluorine atoms. Importers must provide a chemical analysis or a Safety Data Sheet (SDS) to confirm the complex nature of the salt to justify 2826.90 over the simpler fluoride codes.
- Covers
- Sodium hexafluorosilicate
- Magnesium fluorosilicate
- Potassium fluorosilicate
- Zinc fluorosilicate
- Ammonium fluorosilicate
- Also under 2826.90
- Solvay (fluorine chemicals)
- Honeywell (fluorine products)
- Stella Chemifa (fluorine compounds)
- Merck KGaA (specialty chemicals)
Codes often confused with 2826.90
Common mistake. Fluorosilicates are often misclassified under 2826.19, which is for \"other\" simple fluorides. The distinction lies in the \"complex\" nature of the fluorosilicate ion. They are also sometimes confused with 2839.90 (other silicates), but because they contain fluorine, the specific heading 2826 for fluorine salts takes precedence over the general heading for silicates. Furthermore, natural sodium aluminum fluoride (cryolite) is classified under 2530.90 or 2529, not 2826.90, which is for synthetic or purified chemicals.
Top exporters and importers of HS 282690 (the code used for fluorosilicates), 2025
In 2025, the largest exporter of HS 282690 (the code used for fluorosilicates) in UN Comtrade data was China, with 52% of world exports; the largest importer in UN Comtrade data was Japan, with 33% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 282690, not only fluorosilicates.
Top exporters 2025 · share of world exports
- 1 China $209M 52% of world exports
- 2 Germany $68M 17% of world exports
- 3 South Korea $41M 10% of world exports
World total: $399M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Japan $161M 33% of world imports
- 2 United States $96M 20% of world imports
- 3 Poland $40M 8.3% of world imports
World total: $485M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for fluorosilicates
Brazil splits HS 2826.90 into 3 NCM codes. Pick the one that matches your product:
- 2826.90.10Potassium fluoroaluminate
- 2826.90.20Sodium or potassium fluorosilicates
- 2826.90.90Other complex fluorine salts
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about fluorosilicates
What is the HS code for Fluorosilicates?
The HS code for Fluorosilicates is 282690 (Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts, n.e.c. in heading no. 2826).
How do I classify Fluorosilicates for customs?
Fluorosilicates is classified under HS code 282690 — Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts, n.e.c. in heading no. 2826. This is a 6-digit subheading level code.
What is the HS code for sodium fluorosilicate?
Sodium fluorosilicate is classified under HS code 2826.90 as a complex fluorine salt.
Are fluorosilicates classified as hazardous materials?
While the HS code 2826.90 identifies the chemical type, shipping regulations (IMDG/IATA) usually classify them as Class 6.1 toxic substances, which must be declared alongside the HS code.
Which countries are the top exporters of fluorosilicates (HS 282690)?
In 2025, the top exporters of HS 282690 (the code used for fluorosilicates) in UN Comtrade data were China ($209M, 52% of world exports), Germany ($68M) and South Korea ($41M). World exports came to about $399M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of fluorosilicates (HS 282690)?
In 2025, the top importers of HS 282690 (the code used for fluorosilicates) in UN Comtrade data were Japan ($161M, 33% of world imports), the United States ($96M) and Poland ($40M). World imports came to about $485M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Fluorosilicates the same in all countries?
The base HS code 282690 for Fluorosilicates is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for fluorosilicates in Brazil?
Brazil splits HS 282690 into 3 NCM codes, so the right one for fluorosilicates depends on the product's details: 2826.90.10 (Potassium fluoroaluminate), 2826.90.20 (Sodium or potassium fluorosilicates), 2826.90.90 (Other complex fluorine salts).