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HSChapter 28
U.S. imports of hydrogen fluoride (hydrofluoric acid) (HS 281111) totaled $18.2M in April 2026, traded with 12 countries.
Importers of Hydrogen Fluoride (Hydrofluoric Acid) paid $18K in duties in April 2026 — an effective duty rate of 21% on $85K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataHydrofluoric acid is a critical process chemical in semiconductor wafer etching, aluminum fluoride production, and petroleum alkylation, and its extreme toxicity places it among the most tightly regulated industrial acids in commerce. Mexico is the leading supplier to the US, with Taiwan and Japan serving as significant sources of high-purity electronic-grade HF used in chip fabrication. All imports enter under a single line (2811110000), but shipments are subject to stringent DOT hazmat transport requirements, EPA Risk Management Program thresholds, and OSHA Process Safety Management rules at receiving facilities.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Electronic-grade HF is refined to extremely low metallic impurity levels (parts-per-trillion range for some contaminants) required by semiconductor fabs for wafer cleaning and oxide etching. Industrial-grade HF, used in aluminum production and petroleum refining, has broader impurity tolerances. Both grades classify under 2811110000, but supplier qualification documentation, certificate of analysis requirements, and handling protocols differ substantially between the two.
Hydrofluoric acid is listed as an extremely hazardous substance under EPA's Emergency Planning and Community Right-to-Know Act (EPCRA) and triggers EPA Risk Management Program (RMP) requirements above threshold quantities. OSHA's Process Safety Management (PSM) standard also applies at covered facilities. At the border, DOT hazmat regulations govern packaging, placarding, and transport documentation. Importers should work with a licensed customs broker and environmental compliance counsel to ensure all entry and facility-level obligations are met.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $15.5M | $1.1M | -$14.5M |
| CANADA | $51K | $1.3M | +$1.3M |
| KOREA, SOUTH | $676K | $380K | -$297K |
| TAIWAN | $630K | $70K | -$559K |
| JAPAN | $564K | $8K | -$555K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2811110000 | HYDROGEN FLUORIDE (HYDROFLUORIC ACID) | $18.2M | 20.92% | $18K |
HYDROGEN FLUORIDE (HYDROFLUORIC ACID)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2811110000 | HYDROGEN FLUORIDE (HYDROFLUORIC ACID) | $3.2M |
HYDROGEN FLUORIDE (HYDROFLUORIC ACID)
2.1M 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 |
|---|---|---|---|
| BROWNSVILLE, TX | $11.8M | $49K | -$11.8M |
| EL PASO, TX | $2.1M | -- | -$2.1M |
| YSLETA, TX | $1.5M | -- | -$1.5M |