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HSChapter 28
U.S. exports of precious metal compounds and amalgams (other) (HS 284390) totaled $73.4M in July 2026.
Importers of Precious Metal Compounds and Amalgams (Other) paid $529K in duties in July 2026 — an effective duty rate of 4.2% on $12.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataPlatinum-group metal compounds — including platinum, palladium, rhodium, iridium, osmium, and ruthenium salts and complexes — along with amalgams of precious metals not classified elsewhere, are captured under this residual heading. These materials are essential to automotive catalytic converter manufacturing, fuel cell catalyst layers, and specialty chemical synthesis. The United Kingdom and Japan lead US imports under this heading, with South Africa — the world's dominant platinum-group metal producer — also a significant source. The single 10-digit line (2843900000) covers a chemically diverse range of products, so precise chemical identity documentation is critical for classification and valuation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
42 shipments/mo
South Africa holds the world's largest reserves of platinum-group metals (PGMs) and is a primary producer of platinum, palladium, and rhodium. Downstream chemical processing of PGMs into salts and coordination compounds occurs both domestically and in refining hubs such as the UK and Japan, but South Africa's upstream dominance makes it a direct supplier of certain PGM compounds to the US market.
An amalgam is an alloy of mercury with a precious metal (gold, silver, platinum, etc.) and is classified under 2843900000 when it involves a precious metal. Mercury compounds with non-precious metals or other elements are classified elsewhere in Chapter 28. The key classification criterion is whether the mercury is alloyed with a precious metal as defined in HTS Chapter 28 notes.
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Subheading 1 of 5 in heading 2843
Subheading 284390 · $14.8M of $16.1M
ImportsExports
Imports
$14.8MYoY · Pro
Exports
$73.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2843900000 | Organic Compound Precious Metal; Amalgrams, NESOI | $14.8M | 3.59% | 86.35% | $529K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2843900000 | Compounds or Amalgams of Precious Metals, NESOI | $73.4M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · July 2026
destination
Mexico and Netherlands together take 76% of it.
customs district
origin
entry
rate provision · imports
13.7% enters free of duty; the effective duty rate is 3.59%.