U.S. imports of Sulfates, Not Elsewhere Specified or Included (HS 283329) totaled $17.6M in August 2026, imported from 32 countries.
Importers of Sulfates, Not Elsewhere Specified or Included paid $695K in duties in August 2026, an average duty rate of 3.94% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataCobalt, iron, vanadium, chromium, zinc, and manganese sulfates—along with residual sulfates not covered by dedicated headings—are consolidated here across eight distinct 10-digit tariff lines, making correct line selection critical for duty and trade-remedy purposes. Cobalt sulfate (2833291000) is a key precursor in lithium-ion battery cathode manufacturing, giving this heading strategic importance in the EV supply chain. Mexico leads US imports under this heading, with China and India also significant sources; China-origin cobalt and vanadium sulfates may carry Section 301 exposure.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
380 import shipments a month
Cobalt sulfate is specifically enumerated under 2833291000. Correct line selection matters because cobalt sulfate sourced from certain countries may be subject to Section 301 tariffs, and the duty treatment can differ from other sulfates classified under the residual lines 2833295190 or 2833299100.
Mixed-metal sulfate solutions are classified by the component that gives the mixture its essential character, or under the residual 'NESOI' lines if no single metal predominates. A licensed customs broker should be consulted, as misclassification between the enumerated lines can affect both duty rates and trade-remedy applicability.
Trade Directory
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Subheading 1 of 10 in heading 2833
Subheading 283329 · $17.6M of $38.3M
Imports · August 2026
origin
Mexico and Canada together supply 57% of it. China pays 32.0% duty; Mexico 0.0%.
customs district
destination
entry
rate provision · imports
57.2% enters free of duty; duty collected equals 3.94% of imports for consumption.
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 |
|---|---|---|---|---|---|
| 2833294500 | Zinc Sulfate | $10.1M | 0.58% | 34.39% | $59K |
| 2833295110 | Other Sulfates, of Manganese | $2.9M | 8.88% | 54.37% | $257K |
| 2833295190 | Other Sulfates, NESOI | $2.4M | 3.99% | 24.50% | $98K |
| 2833292000 | Iron Sulfate | $1.3M | 18.76% | 80.52% | $244K |
| 2833291000 | Cobalt Sulfate | $778K | 3.43% | 98.62% | $27K |
| 2833294000 | Chromium Sulfate | $69K | 16.20% | 100.00% | $11K |
| 2833293000 | Vanadium Sulfate | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2833299100 | Other Sulfates, NESOI | $5.4M |
| 2833294500 | Zinc Sulfate | $78K |
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
$17.6MYoY · free account
Exports
$5.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $196.5M of Sulfates, Not Elsewhere Specified or Included and exported $38.9M.
Through August 2026. Source: U.S. Census Bureau.