Product classification
HS code for Platinum colloid: 2843.10
Colloidal precious metals, whether or not chemically defined.
Classification of platinum colloid under HS 2843.10
Platinum colloid is classified under HS code 2843.10. This classification falls under Chapter 28, which covers inorganic chemicals and organic or inorganic compounds of precious metals. Heading 2843 specifically addresses colloidal precious metals, inorganic or organic compounds of precious metals, and amalgams of precious metals. Subheading 2843.10 is dedicated to \"Colloidal precious metals.\" A colloid consists of microscopic particles of the metal suspended in a medium, typically a liquid, which does not settle out quickly. Even though platinum is a precious metal usually found in Chapter 71, the Harmonized System directs colloidal forms to Chapter 28 because they are treated as chemical products rather than metallurgical articles or raw bullion. This classification applies regardless of whether the colloid is chemically defined, provided it maintains its colloidal state and is intended for use in medicine, electronics, or chemical research.
- Covers
- Nano-platinum suspensions
- Colloidal platinum solutions for medical research
- Industrial platinum hydrosols
- Platinum nanoparticles in aqueous solution
- Colloidal platinum for conductive inks
- Also under 2843.10
- Sigma-Aldrich (various nanoparticles)
- Nanopartz (gold nanoparticles)
- BBI Solutions (gold nanoparticles)
- Tanaka Kikinzoku Kogyo (precious metal chemicals)
- Johnson Matthey (catalyst precursors)
Codes often confused with 2843.10
Common mistake. Platinum colloid is often misclassified under 7110.11 (unwrought platinum) or 7110.19 (platinum powder). While these codes cover the metal itself, they do not cover the colloidal state. Additionally, some importers mistakenly use 3815.12 for catalytic colloids; however, 2843.10 is more specific for the colloidal metal itself, whereas 3815 is for prepared catalysts with specific supports or binders.
Top exporters and importers of HS 284310 (the code used for platinum colloid), 2025
In 2025, the largest exporter of HS 284310 (the code used for platinum colloid) in UN Comtrade data was Türkiye, with 66% of world exports; the largest importer in UN Comtrade data was the United Arab Emirates, with about 66% 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 284310, not only platinum colloid.
Top exporters 2025 · share of world exports
- 1 Türkiye $202M 66% of world exports
- 2 Romania $29M 9.4% of world exports
- 3 Italy $21M 6.7% of world exports
World total: $307M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United Arab Emirates* ~$202M 66% of world imports · partner records ↗
- 2 Indonesia $45M 15% of world imports
- 3 India $9.8M 3.2% of world imports
World total: $306M 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 platinum colloid
Brazil classifies platinum colloid under NCM 2843.10.00: HS 2843.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about platinum colloid
What is the HS code for Platinum colloid?
The HS code for Platinum colloid is 284310 (Colloidal precious metals; whether or not chemically defined). The HS code for platinum colloid is 2843.10. This classification is used for precious metals in a colloidal state, involving fine particles suspended in a liquid or solid medium.
How do I classify Platinum colloid for customs?
Platinum colloid is classified under HS code 284310 — Colloidal precious metals; whether or not chemically defined. This is a 6-digit subheading level code.
Is platinum powder classified under the same code as platinum colloid?
No, platinum powder is classified under HS code 7110.11 or 7110.19, depending on its form. Colloidal platinum is distinct because the particles are suspended in a medium and exhibit specific chemical properties.
Which countries are the top exporters of platinum colloid (HS 284310)?
In 2025, the top exporters of HS 284310 (the code used for platinum colloid) in UN Comtrade data were Türkiye ($202M, 66% of world exports), Romania ($29M) and Italy ($21M). World exports came to about $307M, 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 platinum colloid (HS 284310)?
In 2025, the top importers of HS 284310 (the code used for platinum colloid) in UN Comtrade data were the United Arab Emirates (about $202M, 66% of world imports), Indonesia ($45M) and India ($9.8M). World imports came to about $306M, 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 Platinum colloid the same in all countries?
The base HS code 284310 for Platinum colloid 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 platinum colloid in Brazil?
In Brazil, platinum colloid (HS 284310) is classified under NCM 2843.10.00.