Product classification

HS code for Sodium molybdate: 2841.70

Salts, molybdates.

Classification of sodium molybdate under HS 2841.70

Sodium molybdate is classified under HS code 2841.70. This classification falls under Chapter 28, which encompasses inorganic chemicals, and Heading 2841, which is dedicated to salts of oxometallic or peroxometallic acids. Specifically, subheading 2841.70 is reserved for molybdates. Sodium molybdate (Na2MoO4) is the sodium salt of molybdic acid. It is commonly found in the dihydrate form (Na2MoO4·2H2O). The classification is based on the chemical identity of the substance as a salt of an oxometallic acid (molybdic acid). Sodium molybdate is used in various industrial applications, including as a corrosion inhibitor in cooling towers, a reagent in analytical chemistry, and a micronutrient in fertilizers to treat molybdenum deficiency in plants. As a separate chemically defined compound, it is correctly placed in Chapter 28. The classification remains the same whether the product is in anhydrous or hydrated form, as per the General Rules of Interpretation and the Chapter 28 notes.

Covers
  • Sodium molybdate anhydrous
  • Sodium molybdate dihydrate
  • Technical grade sodium molybdate
  • Crystalline sodium molybdate
  • Sodium molybdate powder
Also under 2841.70
  • Climax Molybdenum (a Freeport-McMoRan company)
  • Molymet
  • China Molybdenum
  • Sigma-Aldrich Molybdates

Codes often confused with 2841.70

Common mistake. A common misclassification occurs when sodium molybdate is intended for use as a fertilizer. While it is a micronutrient, pure sodium molybdate remains under 2841.70. It only moves to Chapter 31 (Fertilizers) if it is mixed with other fertilizing substances or put up in specific retail packings as a fertilizer. Another error is classifying it under 2841.90, which is the "other" category for salts of oxometallic acids; however, since molybdates are specifically mentioned in 2841.70, that code must be used. It should also not be confused with molybdenum oxides, which are classified under 2825.70.

2841.90Salts of oxometallic or peroxometallic acids; n.e.c. in heading no. 28412825.70Molybdenum oxides and hydroxides

Top exporters and importers of HS 284170 (the code used for sodium molybdate), 2025

In 2025, the largest exporter of HS 284170 (the code used for sodium molybdate) in UN Comtrade data was the Netherlands, with 22% of world exports; the largest importer in UN Comtrade data was Denmark, with 21% 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 284170, not only sodium molybdate.

Top exporters 2025 · share of world exports

  1. 1 Netherlands $61M
  2. 2 United States $53M
  3. 3 India $45M

World total: $275M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Denmark $71M
  2. 2 China $62M
  3. 3 United States $24M

World total: $334M 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 molybdate

Brazil splits HS 2841.70 into 3 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about sodium molybdate

What is the HS code for Sodium molybdate?

The HS code for Sodium molybdate is 284170 (Salts; molybdates). The HS code for sodium molybdate is 2841.70.

How do I classify Sodium molybdate for customs?

Sodium molybdate is classified under HS code 284170 — Salts; molybdates. This is a 6-digit subheading level code.

Is sodium molybdate classified as a fertilizer?

In its pure chemical form, it is classified under 2841.70. It is only classified in Chapter 31 if it is part of a fertilizer mixture or specifically packaged for retail sale as a fertilizer.

Which countries are the top exporters of sodium molybdate (HS 284170)?

In 2025, the top exporters of HS 284170 (the code used for sodium molybdate) in UN Comtrade data were the Netherlands ($61M, 22% of world exports), the United States ($53M) and India ($45M). World exports came to about $275M, 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 molybdate (HS 284170)?

In 2025, the top importers of HS 284170 (the code used for sodium molybdate) in UN Comtrade data were Denmark ($71M, 21% of world imports), China ($62M) and the United States ($24M). World imports came to about $334M, 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 molybdate the same in all countries?

The base HS code 284170 for Sodium molybdate 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 molybdate in Brazil?

Brazil splits HS 284170 into 3 NCM codes, so the right one for sodium molybdate depends on the product's details: 2841.70.10 (Ammonium molybdate), 2841.70.20 (Sodium molybdate), 2841.70.90 (Other molybdates).