HS Code for Sodium hexafluoroaluminate

Sodium hexafluoroaluminate, commonly known as synthetic cryolite, is classified under HS code 2826.30. This classification is determined by the Harmonized System's hierarchical structure, specifically within Chapter 28, which covers inorganic chemicals and precious metal compounds. Heading 2826 is designated for fluorides, fluorosilicates, fluoroaluminates, and other complex fluorine salts. Sodium hexafluoroaluminate is a complex salt consisting of sodium, aluminum, and fluorine. According to the General Rules of Interpretation (GRI) 1 and 6, the product is specifically identified by name in subheading 2826.30. This code is reserved for the synthetic version of the mineral, which is primarily produced through the reaction of hydrofluoric acid with sodium aluminate or through the interaction of aluminum fluoride with sodium fluoride. The classification remains consistent regardless of the product's grade, provided it remains a separate chemically defined compound as per Note 1 to Chapter 28. Its primary industrial application is as a flux in the electrolytic production of aluminum, where it lowers the melting point of alumina.

Products Included

• Synthetic cryolite (Na3AlF6)
• Sodium fluoroaluminate
• Artificial cryolite for aluminum smelting
• Vitreous enamel grade sodium hexafluoroaluminate
• Abrasive grade synthetic cryolite

Common Misclassification

Sodium hexafluoroaluminate is frequently confused with natural cryolite, which is classified under HS code 2530.90. While chemically similar, the Harmonized System distinguishes between naturally occurring minerals (Chapter 25) and those produced through chemical synthesis (Chapter 28). Another common error involves misclassifying it under 2826.19, which is a residual category for other fluorides. However, because 2826.30 specifically names sodium hexafluoroaluminate, it takes precedence over the general category. Additionally, mixtures containing cryolite and other salts for specific industrial uses might be classified under 3824.99 if they no longer meet the definition of a separate chemically defined compound.

FAQ

What is the HS code for sodium hexafluoroaluminate?

The specific HS code for synthetic sodium hexafluoroaluminate is 2826.30.

Is natural cryolite classified under the same HS code?

No, natural cryolite is classified under HS code 2530.90 as a mineral substance not elsewhere specified, whereas the synthetic version is in Chapter 28.