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U.S. exports of peroxosulfates (persulfates) (HS 283340) totaled $3.0M in July 2026.
Importers of Peroxosulfates (Persulfates) paid $92K in duties in July 2026 — an effective duty rate of 16% on $581K in dutiable value, based on actual customs collections rather than the published tariff schedule. Peroxosulfates (Persulfates) imports of $607K in July 2026 ran 26% below the year-to-date monthly average of $821K.
Last updated: July 2026 dataPersulfates—sodium, potassium, and ammonium variants—are strong oxidizing agents widely used in printed circuit board etching, polymer initiation, hair-bleaching formulations, and soil remediation. The US schedule enumerates them across four active 10-digit lines (2833402000, 2833406010, 2833406020, and 2833406050), with Germany the leading supplier and India and Canada also significant sources. Ammonium and sodium persulfates sourced from China may be subject to antidumping duty orders, making country-of-origin verification a compliance priority.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
24 shipments/mo
Ammonium and sodium persulfates from China have historically been subject to US antidumping duty orders. Importers must check the current scope of any active orders with CBP and the Department of Commerce before entry, as scope rulings and suspension agreements can affect applicability.
The US schedule separates sodium persulfate (2833402000), potassium persulfate (2833406010), and ammonium persulfate (2833406020), with a residual line (2833406050) for all other persulfates. Correct classification depends on the specific cation, which should be confirmed by the supplier's certificate of analysis.
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Subheading 8 of 10 in heading 2833
Subheading 283340 · $607K of $36.2M
ImportsExports
Imports
$607KYoY · Pro
Exports
$3.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 2833406010 | Peroxosulfates (Persulfates) of Potassium | $321K | 18.16% | 100.00% | $58K |
| 2833406020 | Peroxosulfates (Persulfates) of Ammonium | $158K | 12.35% | 100.00% | $20K |
| 2833402000 | Peroxosulfates (Persulfates) of Sodium | $128K | 11.00% | 80.30% | $14K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2833400000 | Peroxosulfates (Persulfates) | $3.0M |
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.
Exports · July 2026
destination
customs district
origin
entry
rate provision · imports
4.2% enters free of duty; the effective duty rate is 15.13%.