Product classification
HS code for Potassium dichromate: 2841.50
Salts, chromates, dichromates, peroxochromates, n.e.c. in heading no. 2841.
Classification of potassium dichromate under HS 2841.50
Potassium dichromate (K2Cr2O7) is classified under HS code 2841.50, which encompasses chromates, dichromates, and peroxochromates. As an inorganic salt of dichromic acid, it falls under Chapter 28 (Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). Heading 2841 is designated for salts of oxometallic or peroxometallic acids. Since potassium dichromate is a specific salt of a metallic acid (chromic/dichromic), it is categorized here. It is a crystalline ionic solid with a bright, red-orange color, primarily used as an oxidizing agent in various laboratory and industrial applications. The classification is based on the chemical structure where the chromium is in the +6 oxidation state. This substance is highly regulated due to its carcinogenic and oxidizing properties, but its HS classification remains strictly tied to its chemical identity as a dichromate salt of potassium.
- Covers
- Technical grade potassium dichromate for industrial tanning and dyeing.
- Reagent grade potassium dichromate for analytical chemistry and titrations.
- Potassium dichromate crystals used in the manufacture of safety matches.
- Aqueous solutions of potassium dichromate used as cleaning agents for glassware.
- Potassium dichromate used as a corrosion inhibitor in metal treatment.
- Also under 2841.50
- Sigma-Aldrich Potassium Dichromate
- Merck Chromates
- BASF Pigments (containing chromates)
Codes often confused with 2841.50
Common mistake. Potassium dichromate is often misclassified with sodium dichromate, which falls under HS code 2841.30. While they share similar properties, the cation (potassium vs. sodium) determines the specific subheading. It is also sometimes confused with chromic acid (chromium trioxide), which is classified under 2819.10. Furthermore, if potassium dichromate is prepared as a pigment for paints, it might be incorrectly classified under 3206.20 (pigments and preparations based on chromium compounds). However, if it is the pure chemical salt, 2841.50 is the correct designation. It should also not be confused with potassium chromate (K2CrO4), though both are often found in the same 2841.50 subheading depending on the specific national tariff schedule.
Top exporters and importers of HS 284150 (the code used for potassium dichromate), 2025
In 2025, the largest exporter of HS 284150 (the code used for potassium 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 potassium dichromate.
Top exporters 2025 · share of world exports
- 1 China $2.7M 15% of world exports
- 2 India $2.6M 15% of world exports
- 3 Türkiye $2.6M 15% of world exports
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 United States $6.2M 25% of world imports
- 2 Japan $3.8M 15% of world imports
- 3 France $3.1M 12% of world imports
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 potassium dichromate
Brazil splits HS 2841.50 into 8 NCM codes. Pick the one that matches your product:
- 2841.50.11Ammonium chromate and dichromate
- 2841.50.12Potassium chromate
- 2841.50.13Sodium chromate
- 2841.50.14Potassium dichromate
- 2841.50.15Zinc chromate
- 2841.50.16Lead chromate
- 2841.50.19Other chromates and dichromates
- 2841.50.20Peroxochromates
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about potassium dichromate
What is the HS code for Potassium dichromate?
The HS code for Potassium dichromate is 284150 (Salts; chromates, dichromates, peroxochromates; n.e.c. in heading no. 2841). The HS code for potassium dichromate is 2841.50, which covers chromates, dichromates, and peroxochromates.
How do I classify Potassium dichromate for customs?
Potassium 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.
Why is potassium dichromate regulated in international trade?
Potassium dichromate is a hexavalent chromium compound, which is highly toxic, corrosive, and a known carcinogen. It is also a strong oxidizer that can intensify fires, requiring specific hazardous material handling and documentation during transport.
Which countries are the top exporters of potassium dichromate (HS 284150)?
In 2025, the top exporters of HS 284150 (the code used for potassium 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 potassium dichromate (HS 284150)?
In 2025, the top importers of HS 284150 (the code used for potassium 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 Potassium dichromate the same in all countries?
The base HS code 284150 for Potassium 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 potassium dichromate in Brazil?
Brazil splits HS 284150 into 8 NCM codes, so the right one for potassium 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.