Bis(heptadecafluorooctyl)phosphinic Acid (Heptadecafluorooctyl)phosphonic Acid is an intermediate used in the synthesis of (Heptadecafluorooctyl)(tridecafluorohexyl) Phosphinic Acid Sodium Salt (H268600), which is a polyfluoroalkyl phosphoric acid and was examined an environmental toxic compound found in indoor dust.