Sodium Hexafluoroaluminate (Synthetic Cryolite)

The HS nomenclature gives sodium hexafluoroaluminate its own six-digit heading (282630) because of its distinct and well-established industrial role as an aluminum smelting flux, distinguishing it from the broader fluoroaluminate and fluorine salt basket at 282690. Its single 10-digit US line (2826300000) means there is no further subdivision by grade or purity within the tariff schedule.

Canada is the leading supplier, and goods qualifying as originating under USMCA may be eligible for preferential duty treatment. Shipments from Denmark and Germany, the next-ranked sources, enter under normal trade relations rates. Importers should verify origin documentation carefully, as synthetic cryolite is often produced at integrated fluorochemical facilities where intermediate inputs may cross multiple borders.