AMMONIUM Bifluoride Crystal
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.
Application & Uses
Ammonium Bifluoride successfully replaces the traditional, but a dangerous and aggressive material - hydrofluoric acid, which is very aggressive, corrodes many materials, causing severe burns, releases harmful to breathe fumes. Ammonium bifluoride use instead of hydrofluoric acid is safer for use, storage and transportation and is less harmful, and reduce your costs by 10 - 15%.
Dosage & Directions for Use
Etching and engraving glass
For chemical glass matting
Cleaning boilers and pipes from rust
As a substitute for hydrofluoric acid
Wash oil pipelines
To dissolve deposits in the wells
Bottomhole treatment
Technical Specifications & Properties
CAS Number: 1341-49-7
UN number: 1727
Boiling point: 240 °C (464 °F; 513 K)
EC Number: 215-676-4
Molecular Weight: 57.04 g/mol
Molecular Formula: NH4HF2
Ammonium bifluoride [NH4.HF2]
Melting point :124.6°C (Sublimes at higher temperature)
Boiling point : 239.5°C
When dissolved in water, cooling takes place. Material is Hygroscopic at 50% humidity.
Analysis
Appearance : White crystalline solid (Orthorhombic crystals)
NH4HF2 : 98.76%*
(NH4)2SO4 : 0.05%
(NH4)2SiF6 :0.20%
Moisture :0.59%
Solubility in water : 60.2 g at 20°C and 156.4g at 60°C per 100ml of water
Solubility in HCl : 10% (w/v) sample is soluble in 15% (w/w) of HCl at 25°C
*Assay: Weigh accurately about 1.0gm of Ammonium bi fluoride sample. Dissolve it in 100ml distilled water. Titrate with about 1N NaOH. Use Phenolphthalein as indicator. End point is Colourless to Pink.
% acidity as HF = A / B
1st calculate Consumption of NaOH, B.R. X Normality of NaOH X 0.02 X 100 = A
Then Divided the result with " Weight of the sample " = B
%NH4HF= %acidityasHFx57 / 20
Recommended Industrial & Shipboard Areas
Ammonium bifluoride
Other Name :
(Ammonium hydrogen fluoride, Acid ammonium fluoride, Ammonium hydrogen difluoride )
As an additive to sand in the process of casting magnesium and magnesium alloys, mordant for aluminium, Aluminium anodizing (Metal labels).
Ammonium bifluoride also used for brightening of aluminium, purifying & cleansing beer dispensing apparatus, tube, sterilizing dairy & other food equipment, Glass and electric lamp bulb industry.
Ammonium bifluoride also used as an ingredient of the etching mixture (Glass Frosting), porcelain industries.
Ammonium bifluoride for the removal of iron stains (laundry sour).
Ammonium bifluoride lab production of HF. Bactericide in sugar industry for checking the invisible loss of sugar due to bacteria.
Ammonium bifluoride used as Silica scale removal in boilers & evaporators.
Wood preservatives. In Electroplating Industries for pickling of metals (e.g. Steel sheet prior to Nickel plating, Zinc prior to Copper plating), In nuclear chemistry for the separation of Uranium from Iron, Vanadium, Beryllium and Zirconium.
Product Description & Chemical Profile
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.
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