Hexafluorozirconic acid

Hexafluorozirconic acid (CAS 12021-95-3, EC 234-666-0, formula H2ZrF6) is an inorganic fluorozirconate acid, also referred to commercially as fluorozirconic acid or hexafluorozirconium acid. It carries no assigned E-code and is classified under HS code 2826908090 for customs purposes.

In metal surface treatment, it forms thin zirconium-based conversion coatings on aluminium and steel by reacting with the metal oxide layer, improving paint adhesion and corrosion resistance without chromium compounds. In electronics manufacturing, it functions as a surface modifier and cleaning agent, removing oxide contaminants from substrates while conditioning surfaces for subsequent deposition processes.

This product is supplied as a liquid under REACH registration and is available for industrial-grade procurement across water treatment, textile, leather, paper, and electronics sectors. Buyers should confirm concentration specifications and packaging formats directly with the supplier to ensure compliance with applicable handling and transport regulations.