Loading...
HSChapter 28
U.S. imports of diphosphorus pentaoxide (phosphorus pentoxide) (HS 280910) totaled $879K in April 2026, traded with 3 countries.
Importers of Diphosphorus Pentaoxide (Phosphorus Pentoxide) paid $236K in duties in April 2026 — an effective duty rate of 24% on $986K in dutiable value, based on actual customs collections rather than the published tariff schedule. Diphosphorus Pentaoxide (Phosphorus Pentoxide) imports of $879K in April 2026 ran 67% above the year-to-date monthly average of $526K.
Last updated: April 2026 dataDiphosphorus pentaoxide (P₂O₅), also known as phosphorus pentoxide or phosphoric anhydride, is a powerful desiccant and dehydrating agent used in specialty chemical synthesis, optical fiber manufacturing, and semiconductor processing. India and China are the leading suppliers to the US market, with France representing a European source for higher-purity grades. Classified under a single line (2809100000), the product's extreme hygroscopicity demands specialized moisture-proof packaging and handling protocols that importers must verify comply with DOT hazardous-materials requirements.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Diphosphorus pentaoxide (2809100000) is the anhydrous oxide form of phosphorus, while phosphoric acid and polyphosphoric acids are classified under the adjacent heading 280920. The distinction matters because P₂O₅ is the dehydrated precursor — it reacts violently with water to form phosphoric acid — and the two products serve different industrial functions and carry separate tariff treatment.
Phosphorus pentoxide is classified as a DOT hazardous material (corrosive solid, water-reactive) and must be shipped in hermetically sealed, moisture-proof containers meeting UN specification standards. Shipping documents must include proper hazmat declarations, and importers should confirm that foreign packaging certifications are accepted under US DOT regulations before shipment.
Supplier Network
Get discovered by U.S. importers searching for HS 280910 — Diphosphorus Pentaoxide (Phosphorus Pentoxide). Be the first supplier listed.
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2809100000 | DIPHOSPHORUS PENTAOXIDE | $879K | 23.92% | $236K |
DIPHOSPHORUS PENTAOXIDE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2809100000 | DIPHOSPHORUS PENTAOXIDE | $94K |
DIPHOSPHORUS PENTAOXIDE
36.0K 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 |
|---|---|---|---|
| Georgia | $279K | -- | -$279K |
| South Carolina | $230K | -- | -$230K |
| Texas | $151K | -- | -$151K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $314K | -- | -$314K |
| SAVANNAH, GA | $279K | -- | -$279K |
| LOS ANGELES, CA | $149K | -- | -$149K |