Product classification
HS code for Sodium aluminosilicate: 2842.10
Salts of inorganic acids or peroxoacids, double or complex silicates, including aluminosilicates, whether or not chemically defined, excluding azides.
Classification of sodium aluminosilicate under HS 2842.10
Sodium aluminosilicate is classified under HS code 284210. This code falls under Chapter 28, which deals with inorganic chemicals. Heading 2842 covers "other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides." Subheading 2842.10 is specifically for double or complex silicates, including aluminosilicates. These compounds consist of aluminum, silicon, and oxygen, along with a metal like sodium. They are often used as molecular sieves, catalysts, or anti-caking agents in food and industrial applications. The classification includes synthetic versions of these minerals. According to the Chapter 28 notes, this heading includes aluminosilicates even if they are not chemically defined, which is a unique provision for this category. This allows for the inclusion of various synthetic zeolites that have complex or variable structures. The classification is determined by the chemical nature of the product as a complex silicate of sodium and aluminum.
- Covers
- Synthetic sodium aluminosilicate
- Synthetic zeolites (sodium-based)
- Molecular sieves (aluminosilicate type)
- Sodium aluminum silicate anti-caking agents
- Amorphous sodium aluminosilicate
- Also under 2842.10
- BASF Zeolites
- Imerys Kaolin
- W. R. Grace & Co. (silica gels)
- Evonik Industries (silicates)
Codes often confused with 2842.10
Common mistake. Sodium aluminosilicate is often misclassified under HS code 2507.00, which covers kaolin and other kaolinic clays, or 2530.90 for other mineral substances. However, Chapter 25 is for natural minerals, while 2842.10 is for synthetic or chemically processed aluminosilicates. It may also be confused with simple sodium silicates (2839.11 or 2839.19) or prepared binders for foundry molds (3824.10).
Top exporters and importers of HS 284210 (the code used for sodium aluminosilicate), 2025
In 2025, the largest exporter of HS 284210 (the code used for sodium aluminosilicate) in UN Comtrade data was the Netherlands, with 22% of world exports; the largest importer in UN Comtrade data was the United States, with 14% 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 284210, not only sodium aluminosilicate.
Top exporters 2025 · share of world exports
- 1 Netherlands $181M 22% of world exports
- 2 Germany $178M 22% of world exports
- 3 Japan $98M 12% of world exports
World total: $817M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $133M 14% of world imports
- 2 Poland $102M 11% of world imports
- 3 Germany $99M 10% of world imports
World total: $971M 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 sodium aluminosilicate
Brazil splits HS 2842.10 into 2 NCM codes. Pick the one that matches your product:
- 2842.10.10Zeolite ion exchangers for water treatment
- 2842.10.90Other double or complex silicates
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about sodium aluminosilicate
What is the HS code for Sodium aluminosilicate?
The HS code for Sodium aluminosilicate is 284210 (Salts of inorganic acids or peroxoacids, double or complex silicates, including aluminosilicates, whether or not chemically defined, excluding azides). The HS code for sodium aluminosilicate is 284210.
How do I classify Sodium aluminosilicate for customs?
Sodium aluminosilicate is classified under HS code 284210 — Salts of inorganic acids or peroxoacids, double or complex silicates, including aluminosilicates, whether or not chemically defined, excluding azides. This is a 6-digit subheading level code.
Are all zeolites classified under this code?
Synthetic zeolites are generally classified under 284210, but natural zeolites are classified as mineral products in Chapter 25, typically under 2530.90.
Which countries are the top exporters of sodium aluminosilicate (HS 284210)?
In 2025, the top exporters of HS 284210 (the code used for sodium aluminosilicate) in UN Comtrade data were the Netherlands ($181M, 22% of world exports), Germany ($178M) and Japan ($98M). World exports came to about $817M, 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 sodium aluminosilicate (HS 284210)?
In 2025, the top importers of HS 284210 (the code used for sodium aluminosilicate) in UN Comtrade data were the United States ($133M, 14% of world imports), Poland ($102M) and Germany ($99M). World imports came to about $971M, 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 Sodium aluminosilicate the same in all countries?
The base HS code 284210 for Sodium aluminosilicate 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 sodium aluminosilicate in Brazil?
Brazil splits HS 284210 into 2 NCM codes, so the right one for sodium aluminosilicate depends on the product's details: 2842.10.10 (Zeolite ion exchangers for water treatment), 2842.10.90 (Other double or complex silicates).