U.S. imports of Sulfides and Polysulfides (Other) (HS 283090) totaled $2.0M in August 2026, imported from 18 countries.
Importers of Sulfides and Polysulfides (Other) paid $191K in duties in August 2026, an average duty rate of 9.38% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Sulfides and Polysulfides (Other) imports of $2.0M in August 2026 ran 13% above the year-to-date monthly average of $1.8M.
Last updated: August 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.
34 import shipments a month
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.
ImportsExports
Imports
$2.0MYoY · free account
Exports
$1.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $20.9M of Sulfides and Polysulfides (Other) and exported $23.5M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 1 of 2 in heading 2830
Subheading 283090 · $2.0M of $3.1M
Trade Directory
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2830909000 | Sulfides and Polysulfides, NESOI | $1.7M | 9.38% | 100.00% | $160K |
| 2830901500 | Zinc Sulfide, NESOI | $225K | 12.12% | 100.00% | $27K |
| 2830901000 | Zinc Sulfide Lumin Grd Purity > 99.99% by Wt | $77K | 0.00% | 80.45% | -- |
| 2830902000 | Cadmium Sulfide | $29K | 13.10% | 100.00% | $4K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2830909000 | Sulfides and Polysulfides, NESOI | $1.1M |
| 2830901000 | Zinc Sulfide Lumin Grd Purity > 99.99% by Wt | $218K |
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.
Imports · August 2026
origin
Japan and Austria together supply 48% of it. Japan pays 11.0% duty; South Korea 0.0%.
customs district
destination
entry
rate provision · imports
0.7% enters free of duty; duty collected equals 9.38% of imports for consumption.