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HSChapter 28
U.S. imports of hydrogen fluoride (hydrofluoric acid) (HS 281111) totaled $11.4M in July 2026, traded with 12 countries.
Importers of Hydrogen Fluoride (Hydrofluoric Acid) paid $23K in duties in July 2026 — an effective duty rate of 25% on $91K in dutiable value, based on actual customs collections rather than the published tariff schedule. Hydrogen Fluoride (Hydrofluoric Acid) imports of $11.4M in July 2026 ran 38% below the year-to-date monthly average of $18.3M.
Last updated: July 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.
127 shipments/mo
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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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2811110000 | Hydrogen Fluoride (Hydrofluoric Acid) | $11.4M | 0.20% | 0.79% | $23K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2811110000 | Hydrogen Fluoride (Hydrofluoric Acid) | $3.4M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$11.4MYoY · Pro
Exports
$3.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Mexico and Taiwan together supply 84% of it.
customs district
destination
entry
rate provision · imports
99.2% enters free of duty; the effective duty rate is 0.20%.