Applications
Ammonium Bifluoride has a variety of applications, but it is mainly used in the treatment of metallic and non-metallic surfaces, as a cleaning product, but also in the oil and gas industry and as a chemical intermediate. Ammonium Bifluoride is also used for brightening of aluminum purifying and cleansing beer dispensing apparatuses, tube, and sterilization dairy and other food equipment, glass and electric bulb industry. It is also used as an etching mixture (Glass Frosting), porcelain industries. It is used as an oil well acidifier It also used in Silica Scale removal in boilers and evaporators. It is used as a wood preservative and in electroplating for pickling metals. Ammonium Bifluoride is an intermediate to produce hydrofluoric acid which is used in a number of industrial and commercial applications including cleaning and in the cleaning of bricks and ceramics. It is also used in laboratory production of Hydrogen Fluoride. It may also be used for pH adjustment in industrial textile processing or laundries.
Physical And Chemical Properties
The pH of a 5% aqueous solution of Ammonium Bifluoride is 3.5. In aqueous solution it releases 0.35 pounds of hydrofluoric acid per pound of Ammonium Bifluoride. In strong acid solutions, Ammonium Bifluoride releases 0.70 pounds of hydrofluoric acid per pound. Since the product absorbs heat when aqueous solutions are prepared, it is often advisable to use warm water. Additional properties are listed below.
Melting Point: 258 ºF (126 ºC)
Boiling Point: 462 ºF (239 ºC)
Specific Gravity: 1.5
Solubility in Water (25ºC): 41.5% by weight
Sales Specification
Content(NH4HF2): 98.0% min
(NH4)2SiF6: 2.0% max
Loss on drying: 1.0% max
Residue on ignition: 0.2% max
Sulfate (based on SO4): 0.1% max
Packing
50 LB Bag, 44 bags per pallet
DOT Transportation
UN Number.: 1727
Proper Shipping Name: Ammonium Bifluoride, Solid
Hazard Class: 8
Packing Group: II
