... 0.005Sulfate, % ≤0.03Main usage:Fluoroboric acid is a catalyst for aldehyde synthesis, a metal surface cleaner, a polish for ... one component of preservatives for deactivating aluminum and steel phosphate, an optimum lead soluble electrolyte for lead storage ... making diazonium salt stabilizer and various fluoborate, alkylation and polymerization catalyst, a cleaner and corrodent of metal surface oxide, ...