Product classification
HS code for Silver nitrate: 2843.21
Silver compounds, silver nitrates.
Classification of silver nitrate under HS 2843.21
Silver nitrate is classified under HS code 2843.21. This code is found within Chapter 28, which covers inorganic chemicals and compounds of precious metals. Heading 2843 is dedicated to precious metals in colloidal form, amalgams, and both inorganic and organic compounds of precious metals. Silver nitrate (AgNO3) is a specific chemical compound of silver and is explicitly identified in subheading 21. The classification applies to the chemical in its pure form or in aqueous solutions. It is used extensively in photography, medical applications, and industrial silver plating, but its classification remains fixed in Chapter 28 as long as it is a separate chemically defined compound.
- Covers
- Reagent grade silver nitrate crystals
- Industrial grade silver nitrate
- Aqueous silver nitrate solutions
- Silver nitrate for mirror manufacturing
- High-purity silver nitrate for laboratory use
- Also under 2843.21
- Sigma-Aldrich (reagent silver nitrate)
- Alfa Aesar (silver nitrate)
- Merck KGaA (silver nitrate)
- Johnson Matthey (precious metal chemicals)
- Umicore (precious metal chemicals)
Codes often confused with 2843.21
Common mistake. Silver nitrate is often confused with 2843.29, which is the category for "other" silver compounds like silver oxide or silver chloride. It can also be misclassified under 3004 if it is put up in measured doses for medical use, such as cauterizing sticks. Additionally, if silver nitrate is part of a prepared photographic chemical mixture (like a developer or fixer), it should be classified under 3707 instead of 2843.21.
Top exporters and importers of HS 284321 (the code used for silver nitrate), 2025
In 2025, the largest exporter of HS 284321 (the code used for silver nitrate) in UN Comtrade data was the United Kingdom, with 35% of world exports; the largest importer in UN Comtrade data was the Netherlands, with 28% 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 284321, not only silver nitrate.
Top exporters 2025 · share of world exports
- 1 United Kingdom $159M 35% of world exports
- 2 Netherlands $97M 21% of world exports
- 3 Belgium $66M 14% of world exports
World total: $457M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Netherlands $95M 28% of world imports
- 2 Czechia $53M 16% of world imports
- 3 Germany $38M 11% of world imports
World total: $339M 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 code for silver nitrate
Brazil classifies silver nitrate under NCM 2843.21.00: HS 2843.21 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about silver nitrate
What is the HS code for Silver nitrate?
The HS code for Silver nitrate is 284321 (Silver compounds; silver nitrates). The specific HS code for silver nitrate is 2843.21.
How do I classify Silver nitrate for customs?
Silver nitrate is classified under HS code 284321 — Silver compounds; silver nitrates. This is a 6-digit subheading level code.
Are silver nitrate solutions classified differently?
Standard aqueous solutions of silver nitrate remain under 2843.21. However, if mixed with other chemicals for specific photographic or medical uses, the code may change.
Which countries are the top exporters of silver nitrate (HS 284321)?
In 2025, the top exporters of HS 284321 (the code used for silver nitrate) in UN Comtrade data were the United Kingdom ($159M, 35% of world exports), the Netherlands ($97M) and Belgium ($66M). World exports came to about $457M, 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 silver nitrate (HS 284321)?
In 2025, the top importers of HS 284321 (the code used for silver nitrate) in UN Comtrade data were the Netherlands ($95M, 28% of world imports), Czechia ($53M) and Germany ($38M). World imports came to about $339M, 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 Silver nitrate the same in all countries?
The base HS code 284321 for Silver nitrate 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 silver nitrate in Brazil?
In Brazil, silver nitrate (HS 284321) is classified under NCM 2843.21.00.