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HSChapter 28
U.S. imports of chemically defined inorganic and organic mercury compounds (HS 285210) totaled $72K in April 2026, traded with 5 countries.
Importers of Chemically Defined Inorganic and Organic Mercury Compounds paid $11K in duties in April 2026 — an effective duty rate of 15% on $72K in dutiable value, based on actual customs collections rather than the published tariff schedule. Chemically Defined Inorganic and Organic Mercury Compounds imports of $72K in April 2026 ran 23% above the year-to-date monthly average of $59K.
Last updated: April 2026 dataMercuric oxide, mercuric cyanide, and related chemically defined mercury compounds — covered under 2852101000 and 2852109000 — are tightly regulated substances used in specialty chemical synthesis, laboratory reagents, and certain electronic applications. The Minamata Convention on Mercury, to which the US is a party, imposes significant restrictions on mercury compound trade, and importers must assess whether specific compounds are subject to phase-out schedules or import prohibitions under US EPA regulations. Argentina and India are the leading suppliers to the US market under this heading. Given the hazardous nature of mercury compounds, EPA review and proper hazardous materials documentation are essential components of the import process.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US Environmental Protection Agency (EPA) has primary jurisdiction over mercury compound imports under the Toxic Substances Control Act (TSCA) and Minamata Convention implementing regulations. Importers must file a TSCA certification and may need to demonstrate that the compound is not subject to a use prohibition or phase-out schedule before entry is granted.
A mercury compound is 'chemically defined' when it has a specific, reproducible molecular formula and consistent composition. Mixtures or preparations containing mercury compounds that do not meet this standard fall under 285290 rather than 285210. The distinction affects both the applicable tariff line and, in some cases, the regulatory filing requirements.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2852109000 | INORGAN/ORGAN-MERCURY COMPNDS CHEM DEFIINE, NESOI | $62K | 16.13% | $10K |
| 2852101000 | MERCURIC OXIDE, MERCURIC CYANIDE, ETC | $10K | 10.01% | $998 |
INORGAN/ORGAN-MERCURY COMPNDS CHEM DEFIINE, NESOI
MERCURIC OXIDE, MERCURIC CYANIDE, ETC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2852100000 | INORGANIC/ORGANIC COMPDS MERCURY, CHEMICALLY DEFIN | $66K |
INORGANIC/ORGANIC COMPDS MERCURY, CHEMICALLY DEFIN
4.9K kg
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
SILICON, UNDER 99.99% (BY WEIGHT) SILICON
HS 280469
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHICAGO, IL | $49K | -- | -$49K |
| HUNTSVILLE, AL | -- | $30K | +$30K |
| JFK INTERNATIONAL AIRPORT, NY | $16K | -- | -$16K |