Zinc Fluoroborate, 40%, CAS 13826-88-5, (also known as zinc tetrafluoroborate or zinc fluoborate) has the formula Zn(BF4)2. Zinc Fluoroborate is most widely used as a catalyst for curing resins, as an additive for wrinkle-proof and fire-proof textiles, as an additive in soldering fluxes, and in zinc plating operations.