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HSChapter 28
U.S. imports of hydrides, nitrides, azides, silicides, and related inorganic compounds (HS 285000) totaled $3.9M in April 2026, traded with 18 countries.
Importers of Hydrides, Nitrides, Azides, Silicides, and Related Inorganic Compounds paid $836K in duties in April 2026 — an effective duty rate of 21% on $3.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Hydrides, Nitrides, Azides, Silicides, and Related Inorganic Compounds imports of $3.9M in April 2026 ran 15% above the year-to-date monthly average of $3.4M.
Last updated: April 2026 dataTitanium nitride, tungsten hydride, vanadium nitride, and calcium hydride are representative materials in this technically diverse heading, which supplies the advanced ceramics, hard coatings, pyrotechnics, and specialty metallurgy sectors. The US schedule carves out specific 10-digit lines for calcium (2850000500), titanium (2850000700), tungsten (2850001000), and vanadium (2850002000) hydrides and nitrides, with a catch-all line (2850005000) for remaining compounds. Germany and Japan are the leading suppliers, reflecting their strength in specialty inorganic chemistry and advanced materials manufacturing. Classification at the 10-digit level requires precise chemical identification, as the heading spans compounds with very different physical properties and end uses.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
HTS 285000 covers titanium nitride as a chemical substance or powder (2850000700). Titanium nitride applied as a physical vapor deposition coating on a finished tool is not separately classified — the coated article is classified by its essential character as a tool. Only the uncoated powder or bulk compound falls under this heading.
Certain tungsten compounds can be subject to dual-use export controls in the country of origin, and US importers should verify whether the supplier's export license is required. While US import classification under HTS 285000 is straightforward, downstream re-export of tungsten-based materials may trigger EAR (Export Administration Regulations) review depending on end use and destination.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| TAIWAN | $335K | $9.1M | +$8.8M |
| CHINA | $1.2M | $2.1M | +$887K |
| KOREA, SOUTH | $233K | $2.2M | +$1.9M |
| JAPAN | $1.0M | $949K | -$90K |
| INDIA | $37K | $1.9M | +$1.9M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2850005000 | HYDRIDES & NITRIDES, CHEMICALLY DEFINED/NT, NESOI | $3.5M | 21.70% | $750K |
| 2850000700 | HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF TITANIUM | $265K | 15.59% | $41K |
| 2850002000 | HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF VANADIUM | $181K | 22.18% | $40K |
| 2850000500 | HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF CALCIUM | $11K | 35.00% | $4K |
| 2850001000 | HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF TUNGSTEN | $0 | -- | -- |
HYDRIDES & NITRIDES, CHEMICALLY DEFINED/NT, NESOI
HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF TITANIUM
HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF VANADIUM
HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF CALCIUM
HYDRIDES & NITRIDES, CHEM DEFINED/NT, OF TUNGSTEN
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2850000000 | HYDRIDES, NITRIDES, AZIDES, SILICIDES ETC, NESOI | $19.8M |
HYDRIDES, NITRIDES, AZIDES, SILICIDES ETC, NESOI
970.8K 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
| State | Imports | Exports | Balance |
|---|---|---|---|
| Puerto Rico | -- | $6.0M | +$6.0M |
| Pennsylvania | $247K | $2.9M | +$2.6M |
| Washington | $10K | $2.6M | +$2.6M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAN JUAN INTERNATIONAL AIRPORT, PR | -- | $6.0M | +$6.0M |
| NEW YORK, NY | $102K | $2.3M | +$2.2M |
| LOS ANGELES, CA | $862K | $1.4M | +$506K |