Product Short Description: If the acid used in the working mixture of hydrofluoric acid (45%), it would take 1.55 times more than if we use a dry ammonium bifluoride. Product Description: Ammonium Bifluoride is a white crystalline solid. It is soluble in water. It is noncombustible. It is corrosive to aluminum. It is used in chemical analysis, in brewing, and as a preservative for wood.