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HSChapter 28
U.S. imports of ammonia in aqueous solution (HS 281420) totaled $622K in April 2026, traded with 6 countries.
Last updated: April 2026 dataAqueous ammonia — commonly called ammonium hydroxide or ammonia water — serves a broad range of industrial end uses including semiconductor wafer cleaning, pulp and paper processing, and pH adjustment in water treatment. Entered under a single tariff line (2814200000), it is typically traded in concentrations ranging from roughly 20% to 30% NH₃ by weight, and concentration specification is a key commercial and safety document requirement. Canada is the leading US supplier, with Taiwan and Japan also significant sources, reflecting the product's role in electronics-sector supply chains in Asia.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
No — all aqueous ammonia solutions, regardless of NH₃ concentration, fall under the single line 2814200000. However, concentration is critical for DOT hazmat shipping classification, Safety Data Sheet requirements, and buyer specifications, so it must be accurately declared in commercial documentation even though it does not change the HTS code.
Importers generally need a commercial invoice with concentration and quantity, a Safety Data Sheet, and DOT-compliant hazardous materials shipping papers. Depending on volume and facility type, EPA reporting thresholds under EPCRA may also apply. Consult a licensed customs broker for current entry requirements.
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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 |
|---|---|---|---|---|
| 2814200000 | AMMONIA IN AQUEOUS SOLUTION | $622K | 4.99% | $977 |
AMMONIA IN AQUEOUS SOLUTION
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2814200000 | AMMONIA IN AQUEOUS SOLUTION | $779K |
AMMONIA IN AQUEOUS SOLUTION
2.2K 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
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| Port | Imports | Exports | Balance |
|---|---|---|---|
| PORT HURON, MI | $590K | -- | -$590K |
| HOUSTON, TX | -- | $466K | +$466K |
| BLAINE, WA | $5K | $76K | +$71K |