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HSChapter 28
U.S. imports of peroxosulfates (persulfates) (HS 283340) totaled $1.5M in April 2026, traded with 9 countries.
Importers of Peroxosulfates (Persulfates) paid $193K in duties in April 2026 — an effective duty rate of 13% on $1.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Peroxosulfates (Persulfates) imports of $1.5M in April 2026 ran 80% above the year-to-date monthly average of $842K.
Last updated: April 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.
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.
Monthly import values over time
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| GERMANY | $1.2M | $624K | -$547K |
| UNITED KINGDOM | -- | $550K | +$550K |
| CANADA | $69K | $411K | +$342K |
| INDIA | $223K | $174K | -$48K |
| CHINA | $9K | $318K | +$309K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2833406020 | PEROXOSULFATES (PERSULFATES) OF AMMONIUM | $844K | 13.10% | $111K |
| 2833406010 | PEROXOSULFATES (PERSULFATES) OF POTASSIUM | $372K | 13.71% | $51K |
| 2833402000 | PEROXOSULFATES (PERSULFATES) OF SODIUM | $296K | 13.70% | $31K |
PEROXOSULFATES (PERSULFATES) OF AMMONIUM
PEROXOSULFATES (PERSULFATES) OF POTASSIUM
PEROXOSULFATES (PERSULFATES) OF SODIUM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2833400000 | PEROXOSULFATES (PERSULFATES) | $3.5M |
PEROXOSULFATES (PERSULFATES)
1.6M 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 |
|---|---|---|---|
| Tennessee | -- | $2.1M | +$2.1M |
| Texas | $757K | $143K | -$614K |
| New Jersey | $40K | $467K | +$427K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $210K | $1.3M | +$1.1M |
| HOUSTON, TX | $757K | $13K | -$745K |
| NORFOLK-NEWPORT NEWS, VA | $365K | $324K | -$40K |