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HSChapter 28
U.S. imports of antimony oxides (HS 282580) totaled $20.9M in April 2026, traded with 13 countries.
Antimony Oxides imports of $20.9M in April 2026 ran 40% below the year-to-date monthly average of $35.0M.
Last updated: April 2026 dataAntimony trioxide (Sb₂O₃) is the dominant product under this heading and functions primarily as a flame-retardant synergist in plastics, textiles, and electronics — typically used in combination with halogenated compounds to meet fire safety standards. Belgium and France lead US import supply, reflecting Europe's role as a processing and trading hub for antimony compounds, with South Korea and Bolivia also significant sources. The entire heading is covered by a single tariff line (2825800000). Antimony is designated a critical mineral by the US government, and China's dominance in global antimony mining — even when not appearing as a direct US supplier — creates upstream supply-chain concentration risk that importers should factor into procurement strategy.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes — antimony trioxide (an oxide, classified under 2825800000) is distinct from antimony metal (classified in Chapter 81) and antimony sulfide or stibnite concentrate (classified in Chapter 26 or 28 depending on form). The chemical name, CAS number, and a certificate of analysis confirming the oxide form are essential to avoid misclassification, particularly for shipments described generically as 'antimony compound' on commercial invoices.
Antimony trioxide used as a flame-retardant synergist in consumer goods may be subject to CPSC reporting requirements if incorporated into children's products, and some state-level regulations (notably California's Proposition 65) list antimony oxide as a substance of concern. Importers of finished goods containing antimony trioxide should assess downstream compliance obligations, though the chemical itself, imported as an industrial intermediate, does not trigger a mandatory admissibility review at the port of entry.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| KOREA, SOUTH | $6.8M | -- | -$6.8M |
| FRANCE | $6.1M | $52K | -$6.0M |
| BELGIUM | $4.9M | -- | -$4.9M |
| MEXICO | -- | $1.1M | +$1.1M |
| BOLIVIA | $1.0M | -- | -$1.0M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2825800000 | ANTIMONY OXIDES | $20.9M | 10.00% | $5K |
ANTIMONY OXIDES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2825800000 | ANTIMONY OXIDES | $2.1M |
ANTIMONY OXIDES
805.1K 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 |
|---|---|---|---|
| Indiana | $5.7M | $606K | -$5.1M |
| New Jersey | $4.2M | $198K | -$4.0M |
| Texas | $3.7M | $623K | -$3.1M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $7.0M | $623K | -$6.3M |
| BALTIMORE, MD | $3.2M | -- | -$3.2M |
| WILMINGTON, NC | $2.9M | -- | -$2.9M |