HS code · 6-digit subheading
HS Code 2819.10 – Chromium trioxide
HS code 2819.10 is the 6-digit subheading for chromium trioxide. It is used for chromic acid flakes, chromium trioxide powder, electroplating grade chromium trioxide and anhydrous chromic acid.
What HS 2819.10 covers
This HS code specifically covers chromium trioxide (CrO3), also commonly known as chromic acid. It is a powerful oxidizing agent and a highly corrosive substance, primarily used in the electroplating industry for chrome plating, providing a durable and aesthetically pleasing finish to metal surfaces. Beyond plating, it finds applications in wood preservation, as a raw material for other chromium chemicals, and in certain chemical synthesis processes. Due to its hazardous nature and environmental concerns, its trade is subject to strict regulations and requires specialized handling and transportation. Key importers and exporters include electroplating companies, chemical manufacturers, and wood treatment facilities. Purity and physical form (flakes or powder) are important trade specifications.
- Covers
- Chromic acid flakes
- Chromium trioxide powder
- Electroplating grade chromium trioxide
- Anhydrous chromic acid
- Examples
- MacDermid Enthone Chromic Acid
- Atotech Chromic Acid
- Sigma-Aldrich Chromium Trioxide
Codes often confused with 2819.10
Common mistake. Distinct from other chromium oxides (2819.90) by its specific chemical formula (CrO3) and primary applications; chromium metal (8112.21) is also a different product.
Top exporters and importers of HS code 281910, 2025
In 2025, the largest exporter of HS code 281910 in UN Comtrade data was Kazakhstan, with 22% of world exports; the largest importer in UN Comtrade data was Brazil, with 14% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Kazakhstan $22M 22% of world exports
- 2 South Africa $18M 18% of world exports
- 3 India $17M 17% of world exports
World total: $99M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Brazil $23M 14% of world imports
- 2 Estonia $20M 12% of world imports
- 3 South Korea $12M 7.3% of world imports
World total: $165M 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 code for 2819.10
Brazil does not split HS 2819.10: its NCM code is 2819.10.00.
All Brazil NCM codes in heading 28.19 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2819.10
What is HS code 281910?
HS code 281910 is a 6-digit subheading in the Harmonized System that covers: Chromium trioxide. This HS code specifically covers chromium trioxide (CrO3), also commonly known as chromic acid. It is a powerful oxidizing agent and a highly corrosive substance, primarily used in the electroplating industry for chrome plating, providing a durable and aesthetically pleasing finish to metal surfaces. Beyond plating, it finds applications in wood preservation, as a raw material for other chromium chemicals, and in certain chemical synthesis processes. Due to its hazardous nature and environmental concerns, its trade is subject to strict regulations and requires specialized handling and transportation. Key importers and exporters include electroplating companies, chemical manufacturers, and wood treatment facilities. Purity and physical form (flakes or powder) are important trade specifications.
What products fall under HS code 281910?
Chromic acid flakes, Chromium trioxide powder, Electroplating grade chromium trioxide, Anhydrous chromic acid
What are common misclassifications for HS code 281910?
Distinct from other chromium oxides (2819.90) by its specific chemical formula (CrO3) and primary applications; chromium metal (8112.21) is also a different product.
Which countries are the top exporters of goods under HS code 281910?
In 2025, the top exporters of HS code 281910 in UN Comtrade data were Kazakhstan ($22M, 22% of world exports), South Africa ($18M) and India ($17M). World exports came to about $99M, 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 goods under HS code 281910?
In 2025, the top importers of HS code 281910 in UN Comtrade data were Brazil ($23M, 14% of world imports), Estonia ($20M) and South Korea ($12M). World imports came to about $165M, 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.
How is HS code 281910 structured?
HS code 281910 is a 6-digit subheading under the Harmonized System. The first 2 digits (28) identify the chapter, digits 3-4 (19) identify the heading, and digits 5-6 (10) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 281910?
In Brazil, HS code 281910 is NCM 2819.10.00. The last two digits are 00 because Brazil does not split this HS code further.