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HSChapter 28
U.S. imports of phosphoric acid & polyphosphoric acids (HS 280920) totaled $40.4M in April 2026, traded with 18 countries.
Importers of Phosphoric Acid & Polyphosphoric Acids paid $1.6M in duties in April 2026 — an effective duty rate of 9.0% on $18.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Phosphoric Acid & Polyphosphoric Acids imports of $40.4M in April 2026 ran 22% above the year-to-date monthly average of $33.1M.
Last updated: April 2026 dataFertilizer-grade phosphoric acid — the dominant volume product under this heading — is split from technical and food-grade material at the 10-digit level, with lines distinguishing P₂O₅ content below 65% (2809200010), at or above 65% (2809200020), non-fertilizer grades (2809200030), and polyphosphoric acids (2809200040). Morocco, a global leader in phosphate rock mining, is a major supplier alongside Mexico, reflecting the tight integration between phosphate mining and acid production. Importers of food-grade phosphoric acid should be aware that FDA oversight applies to material destined for food and beverage applications, requiring compliance with food-additive specifications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Classification depends on two factors: P₂O₅ equivalent concentration and intended use. Fertilizer-grade acid below 65% P₂O₅ goes to 2809200010; fertilizer-grade at or above 65% P₂O₅ to 2809200020; non-fertilizer grades (including food, electronic, and technical grades) to 2809200030; and polyphosphoric acid mixtures to 2809200040. Importers should obtain a certificate of analysis confirming concentration and a commercial invoice specifying end use to support the classification.
FDA oversight applies when phosphoric acid is intended for use as a food additive, acidulant in beverages, or in pharmaceutical manufacturing. Such shipments must meet FDA food-additive purity specifications and may be subject to FDA prior notice and port-of-entry examination. Importers should ensure their supplier's product meets the relevant Food Chemicals Codex or USP monograph standards and consult a licensed customs broker or regulatory specialist for admissibility guidance.
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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 |
|---|---|---|---|---|
| 2809200030 | PHOSPHORIC ACID OTHER THAN FERTILIZER GRADE | $39.9M | 9.23% | $1.6M |
| 2809200040 | POLYPHOSPHORIC ACIDS | $355K | 0.75% | $3K |
| 2809200010 | PHOSPHORIC ACID, FERT GRADE, CONT < 65% P205 | $132K | 0.00% | -- |
| 2809200020 | PHOS ACID CONT. 65 PERCENT OR MORE P205 EQUIVALEN | $88K | 0.00% | -- |
PHOSPHORIC ACID OTHER THAN FERTILIZER GRADE
POLYPHOSPHORIC ACIDS
PHOSPHORIC ACID, FERT GRADE, CONT < 65% P205
PHOS ACID CONT. 65 PERCENT OR MORE P205 EQUIVALEN
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2809200010 | PHOSPHORIC ACID, FERT GRADE, CONT < 65% P205 | $34.7M |
| 2809200040 | POLYPHOSPHORIC ACIDS | $6.9M |
| 2809200030 | PHOSPHORIC ACID OTHER THAN FERTILIZER GRADE | $4.8M |
| 2809200020 | PHOS ACID CONT. 65 PERCENT OR MORE P205 EQUIVALEN | $3.9M |
PHOSPHORIC ACID, FERT GRADE, CONT < 65% P205
42.8K t
POLYPHOSPHORIC ACIDS
7.2K t
PHOSPHORIC ACID OTHER THAN FERTILIZER GRADE
2.9K t
PHOS ACID CONT. 65 PERCENT OR MORE P205 EQUIVALEN
3.7K t
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
SULFURIC ACID; OLEUM
HS 280700
| State | Imports | Exports | Balance |
|---|---|---|---|
| Louisiana | $21.6M | $6.0M | -$15.7M |
| North Carolina | $61K | $25.8M | +$25.7M |
| Illinois | -- | $9.4M | +$9.4M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BEAUFORT-MOREHEAD CITY, NC | -- | $25.6M | +$25.6M |
| BATON ROUGE, LA | $21.6M | -- | -$21.6M |
| SAVANNAH, GA | $7.6M | $364K | -$7.3M |