U.S. imports of Hydrogen Fluoride (Hydrofluoric Acid) (HS 281111) totaled $16.5M in August 2026, imported from 12 countries.
Importers of Hydrogen Fluoride (Hydrofluoric Acid) paid $69K in duties in August 2026, an average duty rate of 0.42% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
157 import shipments a month
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.
Subheading 2 of 6 in heading 2811
Subheading 281111 · $16.5M of $56.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2811110000 | Hydrogen Fluoride (Hydrofluoric Acid) | $16.5M | 0.42% | 2.48% | $69K |
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) | $6.1M |
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.
Imports · August 2026
origin
Mexico and South Korea together supply 83% of it.
customs district
destination
entry
rate provision · imports
97.5% enters free of duty; duty collected equals 0.42% of imports for consumption.
ImportsExports
Imports
$16.5MYoY · free account
Exports
$6.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $199.7M of Hydrogen Fluoride (Hydrofluoric Acid) and exported $52.4M.
Through August 2026. Source: U.S. Census Bureau.
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