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U.S. imports of sulfides and polysulfides (other) (HS 283090) totaled $2.3M in July 2026, traded with 18 countries.
Importers of Sulfides and Polysulfides (Other) paid $227K in duties in July 2026 — an effective duty rate of 12% on $1.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Sulfides and Polysulfides (Other) imports of $2.3M in July 2026 ran 30% above the year-to-date monthly average of $1.8M.
Last updated: July 2026 dataZinc sulfide in luminescent grade (purity exceeding 99.99% by weight, classified under 2830901000) is the most specification-sensitive line here, used in phosphor screens, optical coatings, and infrared windows — a very different commercial profile from the general-purpose zinc sulfide (2830901500) and the catch-all sulfides and polysulfides line (2830909000). Germany and Japan are the leading US suppliers, reflecting the advanced-chemical manufacturing base required for high-purity grades. Importers should confirm whether the purity threshold is met by certified analysis, as misclassification between the luminescent and non-luminescent zinc sulfide lines can affect duty treatment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
42 shipments/mo
The key criterion is purity: zinc sulfide with a purity exceeding 99.99% by weight qualifies as luminescent grade under 2830901000. Importers should provide a certified chemical analysis or certificate of conformance to support this classification at entry.
The residual line covers a broad range of inorganic sulfides used in rubber vulcanization, mining flotation reagents, pigment production, and specialty chemical synthesis. The specific end-use determines which downstream regulations or export controls may apply.
HSChapter 28
Subheading 1 of 2 in heading 2830
Subheading 283090 · $2.3M of $2.9M
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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 |
|---|---|---|---|---|---|
| 2830909000 | Sulfides and Polysulfides, NESOI | $1.4M | 8.71% | 68.42% | $123K |
| 2830901500 | Zinc Sulfide, NESOI | $695K | 13.77% | 100.00% | $96K |
| 2830901000 | Zinc Sulfide Lumin Grd Purity > 99.99% by Wt | $199K | 4.44% | 94.47% | $9K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2830901000 | Zinc Sulfide Lumin Grd Purity > 99.99% by Wt | $1.3M |
| 2830909000 | Sulfides and Polysulfides, NESOI | $659K |
| 2830902000 | Cadmium Sulfide | $36K |
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.
ImportsExports
Imports
$2.3MYoY · Pro
Exports
$2.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Japan and Germany together supply 73% of it.
customs district
destination
entry
rate provision · imports
19.8% enters free of duty; the effective duty rate is 9.87%.