HS Code for Hydrofluoric acid

Hydrofluoric acid is classified under HS code 281111. This code is part of the inorganic chemicals chapter (Chapter 28) and falls under heading 2811, which encompasses other inorganic acids. Specifically, 281111 is the designated subheading for hydrogen fluoride (hydrofluoric acid). The classification is based on the chemical composition of the substance, which consists of hydrogen and fluorine. This code applies to both the anhydrous form (hydrogen fluoride gas or liquid) and the aqueous solution (hydrofluoric acid). The Harmonized System treats these forms as the same chemical entity for classification purposes. It is widely used in industrial applications such as glass etching, metal cleaning, and as a precursor to fluoropharmaceuticals, but its classification remains strictly tied to its identity as an inorganic acid.

Products Included

• Anhydrous hydrogen fluoride
• Aqueous hydrofluoric acid solutions
• Technical grade hydrofluoric acid
• Electronic grade hydrofluoric acid
• Etching grade hydrofluoric acid

Common Misclassification

Hydrofluoric acid is often confused with other fluorine-based inorganic chemicals. For instance, fluorides, fluorosilicates, and other complex fluorine salts are classified under heading 2826. Specifically, sodium fluoride is 282619. Another common misclassification occurs when hydrofluoric acid is part of a prepared mixture for cleaning or etching; if the solution contains additives like detergents or specialized buffers, it may be classified under HS code 3402 or 3810. It is critical to verify if the product is a pure chemical solution or a formulated preparation before assigning code 281111.

FAQ

What is the HS code for Hydrofluoric acid?

The HS code for hydrofluoric acid and hydrogen fluoride is 281111.

Does the concentration of the acid affect the HS code?

No, whether the hydrofluoric acid is highly concentrated or diluted in water, it remains classified under HS code 281111, provided it is not mixed with other functional ingredients.