Fluoroboric Acid, 50%, CAS 16872-11-0, (also known as hexafluoroboric acid or fluoboric acid) has the formula HBF4. It is a corrosive chemical, like all salts of fluorosilicic acid. Fluoroboric acid finds use as a cleaner and surface preparation prior to electroplating, a stripping solution for solder/flux, pH modifier for electroplating baths, as a catalyst for alkylations and polymerizations, and for the stabilization of diazo salts.
