Product classification
HS code for Calcium nitrate: 2834.29
Nitrates, of other than potassium.
Classification of calcium nitrate under HS 2834.29
Calcium nitrate is classified under HS code 2834.29, which pertains to nitrates other than those of potassium. This classification is situated within Chapter 28, covering inorganic chemicals. Heading 2834 specifically includes nitrites and nitrates. The subheading 2834.21 is reserved for potassium nitrate, leaving 2834.29 as the category for all other inorganic nitrates, including calcium nitrate (Ca(NO3)2). However, classification of calcium nitrate is highly dependent on its purity and intended use. Under Note 2 to Chapter 31, certain mineral or chemical fertilizers are classified in Chapter 31 even if they are chemically pure. Pure calcium nitrate or calcium nitrate tetrahydrate used for industrial purposes (such as concrete additives or wastewater treatment) is correctly placed in 2834.29. If the product is a double salt or a mixture of calcium nitrate and ammonium nitrate intended for use as fertilizer, it must be moved to Chapter 31. For the pure chemical compound, 2834.29 remains the standard classification for international trade.
- Covers
- Anhydrous calcium nitrate
- Calcium nitrate tetrahydrate
- Industrial grade calcium nitrate for concrete setting accelerators
- Calcium nitrate used in latex dipping processes
- Also under 2834.29
- Chilean Saltpeter (sodium nitrate)
- YaraLiva (calcium nitrate fertilizer)
- ANFO (ammonium nitrate fuel oil explosive)
- Photographic Chemicals (silver nitrate)
- Pyrotechnic Colorants (strontium/barium nitrate)
Codes often confused with 2834.29
Common mistake. Calcium nitrate is frequently misclassified under HS code 3102.60. Code 3102.60 is specifically for double salts and mixtures of calcium nitrate and ammonium nitrate used as fertilizers. If the product is a pure chemical salt, it belongs in 2834.29. Another error is confusing it with potassium nitrate (2834.21) or magnesium nitrate (2834.29), though the latter shares the same subheading but is a different chemical entity.
Top exporters and importers of HS 283429 (the code used for calcium nitrate), 2025
In 2025, the largest exporter of HS 283429 (the code used for calcium nitrate) in UN Comtrade data was China, with 29% of world exports; the largest importer in UN Comtrade data was Germany, with 7.2% 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 283429, not only calcium nitrate.
Top exporters 2025 · share of world exports
- 1 China $102M 29% of world exports
- 2 Belgium $38M 11% of world exports
- 3 Poland $26M 7.5% of world exports
World total: $346M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $30M 7.2% of world imports
- 2 United States $30M 7.2% of world imports
- 3 France $25M 6.1% of world imports
World total: $418M 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 calcium nitrate
Brazil splits HS 2834.29 into 4 NCM codes. Pick the one that matches your product:
- 2834.29.10Calcium nitrate, 16% nitrogen or less
- 2834.29.30Aluminium nitrate
- 2834.29.40Lithium nitrate
- 2834.29.90Other nitrates
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about calcium nitrate
What is the HS code for Calcium nitrate?
The HS code for Calcium nitrate is 283429 (Nitrates; of other than potassium).
How do I classify Calcium nitrate for customs?
Calcium nitrate is classified under HS code 283429 — Nitrates; of other than potassium. This is a 6-digit subheading level code.
What is the HS code for pure calcium nitrate?
The HS code for pure, chemically defined calcium nitrate is 2834.29.
When should I use HS code 3102.60 instead?
You should use 3102.60 if the product is a mixture of calcium nitrate and ammonium nitrate, or a double salt of these compounds, typically used for agricultural fertilization.
Which countries are the top exporters of calcium nitrate (HS 283429)?
In 2025, the top exporters of HS 283429 (the code used for calcium nitrate) in UN Comtrade data were China ($102M, 29% of world exports), Belgium ($38M) and Poland ($26M). World exports came to about $346M, 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 calcium nitrate (HS 283429)?
In 2025, the top importers of HS 283429 (the code used for calcium nitrate) in UN Comtrade data were Germany ($30M, 7.2% of world imports), the United States ($30M) and France ($25M). World imports came to about $418M, 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 Calcium nitrate the same in all countries?
The base HS code 283429 for Calcium 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 calcium nitrate in Brazil?
Brazil splits HS 283429 into 4 NCM codes, so the right one for calcium nitrate depends on the product's details: 2834.29.10 (Calcium nitrate, 16% nitrogen or less), 2834.29.30 (Aluminium nitrate), 2834.29.40 (Lithium nitrate), 2834.29.90 (Other nitrates).