Product classification

HS code for Ammonium dichromate: 2841.50

Salts, chromates, dichromates, peroxochromates, n.e.c. in heading no. 2841.

Classification of ammonium dichromate under HS 2841.50

Ammonium dichromate is classified under HS code 2841.50. This subheading covers chromates, dichromates, and peroxochromates that are not elsewhere specified within heading 2841. Heading 2841 is part of Chapter 28, which covers inorganic chemicals, and specifically addresses salts of oxometallic or peroxometallic acids. Ammonium dichromate, with the chemical formula (NH4)2Cr2O7, is an inorganic compound that appears as bright orange crystals. It is widely used in various industrial applications, including sensitizing emulsions in photography, lithography, and as a catalyst in chemical synthesis. The classification is based strictly on the chemical identity of the salt. Subheading 2841.50 serves as the primary category for chromium-based salts of this nature that do not have their own dedicated subheadings. Proper classification requires the product to be a separate chemically defined inorganic salt. If the ammonium dichromate were mixed with other substances for a specific functional use, such as a prepared pigment, it might be moved to Chapter 32. However, in its pure or technical grade form, it must be declared under 2841.50.

Covers
  • Pure ammonium dichromate
  • Technical grade ammonium dichromate
  • Ammonium bichromate
  • Crystalline ammonium dichromate
Also under 2841.50
  • Sigma-Aldrich Potassium Dichromate
  • Merck Chromates
  • BASF Pigments (containing chromates)

Codes often confused with 2841.50

Common mistake. Ammonium dichromate is often confused with sodium dichromate, which is classified under HS code 2841.30. It is also sometimes misclassified under 2819.10 (chromium trioxide) or 2819.90 (other chromium oxides and hydroxides). Another error involves 2841.61, which is for potassium permanganate, due to its similar use as an oxidizer. Importers must distinguish between the specific metal cation (ammonium vs sodium or potassium) to ensure correct coding.

2841.30Salts; sodium dichromate2819.10Chromium trioxide2819.90Chromium oxides and hydroxides; excluding chromium trioxide2841.61Salts; of oxometallic or peroxometallic acids, manganites, manganates and permanganates, potassium permanganate

Top exporters and importers of HS 284150 (the code used for ammonium dichromate), 2025

In 2025, the largest exporter of HS 284150 (the code used for ammonium dichromate) in UN Comtrade data was China, with 15% of world exports; the largest importer in UN Comtrade data was the United States, with 25% of world imports. Türkiye reports $969M of its chapter 28 exports without product detail (confidential), so its figure here may be too low and it may rank higher.

Figures cover everything classified under HS 284150, not only ammonium dichromate.

Top exporters 2025 · share of world exports

  1. 1 China $2.7M
  2. 2 India $2.6M
  3. 3 Türkiye $2.6M

Türkiye reports $969M of its chapter 28 exports without product detail (confidential), so its figure here may be too low and it may rank higher.

World total: $18M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $6.2M
  2. 2 Japan $3.8M
  3. 3 France $3.1M

World total: $25M 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 ammonium dichromate

Brazil splits HS 2841.50 into 8 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 ammonium dichromate

What is the HS code for Ammonium dichromate?

The HS code for Ammonium dichromate is 284150 (Salts; chromates, dichromates, peroxochromates; n.e.c. in heading no. 2841). The correct HS code for ammonium dichromate is 2841.50.

How do I classify Ammonium dichromate for customs?

Ammonium dichromate is classified under HS code 284150 — Salts; chromates, dichromates, peroxochromates; n.e.c. in heading no. 2841. This is a 6-digit subheading level code.

Is ammonium dichromate classified as a hazardous material for customs?

While it is a hazardous oxidizer, its HS classification is based on its chemical composition (2841.50) rather than its safety characteristics, though safety data sheets are required for transport.

Which countries are the top exporters of ammonium dichromate (HS 284150)?

In 2025, the top exporters of HS 284150 (the code used for ammonium dichromate) in UN Comtrade data were China ($2.7M, 15% of world exports), India ($2.6M) and Türkiye ($2.6M). World exports came to about $18M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Türkiye reports $969M of its chapter 28 exports without product detail (confidential), so its figure here may be too low and it may rank higher.

Which countries are the top importers of ammonium dichromate (HS 284150)?

In 2025, the top importers of HS 284150 (the code used for ammonium dichromate) in UN Comtrade data were the United States ($6.2M, 25% of world imports), Japan ($3.8M) and France ($3.1M). World imports came to about $25M, 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 Ammonium dichromate the same in all countries?

The base HS code 284150 for Ammonium 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 ammonium dichromate in Brazil?

Brazil splits HS 284150 into 8 NCM codes, so the right one for ammonium dichromate depends on the product's details: 2841.50.11 (Ammonium chromate and dichromate), 2841.50.12 (Potassium chromate), 2841.50.13 (Sodium chromate), 2841.50.14 (Potassium dichromate), 2841.50.15 (Zinc chromate), 2841.50.16 (Lead chromate), and more.