Ammonium Bifluoride, CAS 1341-49-7, has the formula (NH4)HF2. Ammonium Bifluoride is used as a replacement to Hydrofluoric Acid due to the relative ease of handling the ABF as compared to HF Acid. ABF is used in metal processes as a buffering acid in etching processes. ABF can also be used as an intermediate in the production of HF acid from fluorosilicic acid.
