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HSChapter 28
U.S. imports of nitric acid & sulfonitric acids (HS 280800) totaled $941K in May 2026, traded with 10 countries.
Importers of Nitric Acid & Sulfonitric Acids paid $49K in duties in May 2026 — an effective duty rate of 10% on $477K in dutiable value, based on actual customs collections rather than the published tariff schedule. Nitric Acid & Sulfonitric Acids imports of $941K in May 2026 ran 21% above the year-to-date monthly average of $778K.
Last updated: May 2026 dataNitric acid and mixed sulfonitric acids (nitrating acids) are essential intermediates in explosives, fertilizers, and specialty chemical synthesis, and the US schedule separates them at the 10-digit level into nitric acid (2808000010) and sulfonitric acids (2808000020), with a combined line (2808000000) also present. Canada is the leading supplier, consistent with integrated North American chemical trade, while Germany and South Korea serve as sources for higher-specification industrial and electronic-grade material. Both products are classified as oxidizing hazardous materials under DOT, and sulfonitric acids carry additional scrutiny given their use in nitration reactions relevant to controlled-substance precursor monitoring.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Nitric acid (2808000010) is the pure or aqueous acid used broadly in fertilizer and metal-etching applications. Sulfonitric acids (2808000020) are mixtures of nitric and sulfuric acids — commonly called 'mixed acid' or 'nitrating acid' — used specifically in nitration reactions in explosives and pharmaceutical manufacturing. Correct identification of the product form is essential because the two lines may carry different duty treatment and trigger different regulatory scrutiny.
Yes. Nitric acid above certain concentrations is subject to DHS Chemical Facility Anti-Terrorism Standards (CFATS) reporting requirements for facilities that receive it, and it appears on EPA's list of extremely hazardous substances. Importers should also be aware of ATF and international precursor-control frameworks that may require end-use certificates for certain transaction sizes, particularly for sulfonitric acid used in explosives manufacturing.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $478K | $554K | +$77K |
| MEXICO | -- | $810K | +$810K |
| KOREA, SOUTH | $189K | $5K | -$184K |
| GERMANY | $160K | $7K | -$153K |
| TAIWAN | $71K | $7K | -$64K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2808000010 | NITRIC ACID | $817K | 7.31% | 73.12% | $60K |
| 2808000020 | SULFONITRIC ACIDS | $0 | -- | -- | -- |
NITRIC ACID
SULFONITRIC ACIDS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2808000000 | NITRIC ACID AND SULFONITRIC ACIDS | $1.5M |
NITRIC ACID AND SULFONITRIC ACIDS
3.2M 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
| Port | Imports | Exports | Balance |
|---|---|---|---|
| EAGLE PASS, TX | -- | $375K | +$375K |
| LAREDO, TX | -- | $357K | +$357K |
| PORT HURON, MI | $30K | $252K | +$222K |