Product classification

HS code for Sodium dichromate: 2841.30

Salts, sodium dichromate.

Classification of sodium dichromate under HS 2841.30

Sodium dichromate is classified under HS code 2841.30. This classification is found within Chapter 28 of the Harmonized System, which encompasses inorganic chemicals. Heading 2841 is designated for salts of oxometallic or peroxometallic acids. Sodium dichromate, being a salt of dichromic acid, fits into this heading. Subheading 2841.30 is the specific international code for sodium dichromate. This chemical is an inorganic compound that usually occurs as a dihydrate with a bright orange color. It is a critical industrial chemical used as a precursor for most other chromium compounds, including pigments and tanning agents. It is also used in metal finishing, petroleum refining, and as an oxidizing agent in organic synthesis. The classification is based on its chemical structure as an oxometallic salt. Even when used in specific industrial processes like leather tanning, the pure or technical grade chemical remains classified under this code rather than under the headings for tanning extracts or prepared pigments.

Covers
  • Sodium dichromate dihydrate crystals
  • Anhydrous sodium dichromate
  • Technical grade sodium dichromate for industrial use
  • Sodium dichromate solutions (pure)
  • Reagent grade sodium dichromate for laboratory use
Also under 2841.30
  • Lanxess Sodium Dichromate
  • Elementis Chromium
  • Vishnu Chemicals Sodium Dichromate

Codes often confused with 2841.30

Common mistake. Sodium dichromate is frequently misclassified under HS code 2841.50, which is the residual category for other chromates and dichromates, such as potassium dichromate. Because sodium dichromate has its own specific subheading (2841.30), it must not be placed in the general category. Another common error involves HS code 3202.90, which covers synthetic organic tanning substances and inorganic tanning substances. While sodium dichromate is used in the tanning industry, the pure chemical salt belongs in Chapter 28. Similarly, it should not be confused with chromium oxides classified under 2819 or sodium chromate classified under 2841.50.

2841.50Salts; chromates, dichromates, peroxochromates; n.e.c. in heading no. 28413202.90Tanning substances; inorganic tanning substances; tanning preparations, whether or not containing natural tanning substances; enzymatic preparations for pre- tanning28.19Chromium oxides and hydroxides

Top exporters and importers of HS 284130 (the code used for sodium dichromate), 2025

In 2025, the largest exporter of HS 284130 (the code used for sodium dichromate) in UN Comtrade data was South Africa, with 76% of world exports; the largest importer in UN Comtrade data was Germany, with 31% of world imports. The United Kingdom reports $3.0B of its chapter 28 exports without product detail (confidential), so it may also belong among the top exporters.

Figures cover everything classified under HS 284130, not only sodium dichromate.

Top exporters 2025 · share of world exports

  1. 1 South Africa $52M
  2. 2 Russia* ~$9.4M
  3. 3 St. Helena* ~$1.2M

The United Kingdom reports $3.0B of its chapter 28 exports without product detail (confidential), so it may also belong among the top exporters.

World total: $68M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Germany $34M
  2. 2 India $15M
  3. 3 China $15M

World total: $108M 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 marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. 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 sodium dichromate

Brazil classifies sodium dichromate under NCM 2841.30.00: HS 2841.30 with 00 added.

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

Questions about sodium dichromate

What is the HS code for Sodium dichromate?

The HS code for Sodium dichromate is 284130 (Salts; sodium dichromate). The international HS code for sodium dichromate is 2841.30, which specifically identifies this sodium salt of dichromic acid.

How do I classify Sodium dichromate for customs?

Sodium dichromate is classified under HS code 284130 — Salts; sodium dichromate. This is a 6-digit subheading level code.

What are the primary industrial applications of sodium dichromate?

Sodium dichromate is primarily used as a starting material for the production of chromium-based pigments, as a tanning agent in the leather industry, and as a corrosion inhibitor in metal treatment. It is also utilized in the manufacturing of vitamin K and as an oxidant in various chemical manufacturing processes.

Which countries are the top exporters of sodium dichromate (HS 284130)?

In 2025, the top exporters of HS 284130 (the code used for sodium dichromate) in UN Comtrade data were South Africa ($52M, 76% of world exports), Russia (about $9.4M) and St. Helena (about $1.2M). World exports came to about $68M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). The United Kingdom reports $3.0B of its chapter 28 exports without product detail (confidential), so it may also belong among the top exporters.

Which countries are the top importers of sodium dichromate (HS 284130)?

In 2025, the top importers of HS 284130 (the code used for sodium dichromate) in UN Comtrade data were Germany ($34M, 31% of world imports), India ($15M) and China ($15M). World imports came to about $108M, 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 dichromate the same in all countries?

The base HS code 284130 for Sodium dichromate 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 dichromate in Brazil?

In Brazil, sodium dichromate (HS 284130) is classified under NCM 2841.30.00.