Hydrogen fluoride (Hydrofluoric acid)
Other inorganic acids and other inorganic oxygen compounds of nonmetals: > Other inorganic acids: > Hydrogen fluoride (Hydrofluoric acid)
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2811.11.00.00
Anhydrous Hydrogen Fluoride
Pure anhydrous hydrogen fluoride (HF) is a colorless, corrosive gas or liquid used primarily in industrial processes like fluorochemical production. It falls under HTS 2811.11.00.00 as it is the specific inorganic acid hydrogen fluoride, chemically defined per Chapter 28 notes. This classification applies to the pure compound without water.
48% Hydrofluoric Acid Solution
A standard industrial grade of hydrofluoric acid at 48% concentration in water, used for etching glass and semiconductors. Classified under HTS 2811.11.00.00 as hydrogen fluoride, the primary compound, per Chapter 28 definitions for chemically defined inorganic acids. It is imported in plastic carboys for safety.
70% Hydrogen Fluoride Industrial Grade
High-concentration 70% HF solution for heavy-duty applications like aluminum etching in manufacturing. It is explicitly hydrogen fluoride under HTS 2811.11.00.00, meeting Chapter 28 note for inorganic acids of nonmetals. Supplied in bulk tankers with strict safety protocols.
Electronic Grade Hydrofluoric Acid (HF)
Ultra-pure hydrofluoric acid for semiconductor wafer cleaning, with impurities below ppb levels. Falls under HTS 2811.11.00.00 as chemically defined hydrogen fluoride for inorganic acid category in Chapter 28. Packaged in cleanroom-compatible fluoropolymer bottles.
Buffered Hydrofluoric Acid (BHF)
Buffered HF solution typically 6:1 HF:NH4F for silicon dioxide etching in microelectronics. Primarily hydrogen fluoride, thus HTS 2811.11.00.00 per Chapter 28 inorganic acids note, despite buffering. Imported for precision semiconductor processing.
Pharma Grade Hydrofluoric Acid
High-purity HF meeting USP standards for pharmaceutical fluoride production and synthesis. Classified as hydrogen fluoride under HTS 2811.11.00.00, chemically defined inorganic acid excluding organo-inorganics per Chapter notes. Supplied in sterile, low-metal containers.
Glass Etching Hydrofluoric Acid
20-30% HF solution specialized for frosted glass production and decorative etching. It is hydrogen fluoride per HTS 2811.11.00.00, as the defining inorganic acid component. Commonly imported for architectural and automotive glass applications.
Anhydrous HF Gas Cylinder
Compressed anhydrous hydrogen fluoride gas in steel cylinders for fluorination reactions. Strictly HTS 2811.11.00.00 as pure hydrogen fluoride, inorganic nonmetal acid. Used in chemical synthesis plants.
Semiconductor Cleaning HF
Dilute 0.5% HF for native oxide removal in wafer fabrication. Remains hydrogen fluoride under HTS 2811.11.00.00 due to chemical definition in Chapter 28. Shipped in high-purity Teflon bottles.
Aluminum Brightener HF Solution
HF-based pickling solution for aluminum surface preparation in metal finishing. Classified as hydrogen fluoride HTS 2811.11.00.00, primary active per notes. Bulk imported for anodizing lines.
Technical Grade 50% Hydrofluoric Acid
50% HF technical grade for general industrial cleaning and chemical intermediate production. HTS 2811.11.00.00 for hydrogen fluoride as defined inorganic acid. Standard in 55-gallon drums.
Fluorspar Derived HF
Hydrogen fluoride produced from fluorspar (CaF2) reaction, 99% purity for refrigerant synthesis. Pure HF qualifies for HTS 2811.11.00.00 per Chapter 28 chemical definition. Gaseous or liquid form.
Lab Grade Hydrofluoric Acid
ACS reagent grade HF for analytical chemistry and research labs, typically 48-50%. Chemically defined hydrogen fluoride under HTS 2811.11.00.00, excluding lab mixtures per notes. In 500mL plastic bottles.
High Purity Anhydrous HF
99.99% anhydrous HF for advanced fluoropolymer and pharma synthesis. HTS 2811.11.00.00 as pure inorganic hydrogen fluoride. Specialized monel or Teflon vessels.
Corrosion Inhibited HF
HF with proprietary inhibitors for safe stainless steel handling in oilfield applications. Still hydrogen fluoride dominant for HTS 2811.11.00.00 classification. Drummed for energy sector.