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Ammonium fluoroborate
[Name] ammonium fluoroborate[13826-83-0]
[Molecular formula] NH4BF4
[Molecular weight] 104.84
[UN]
[Product Specifications]
Appearance: acicular crystal
Purity: 98 %min
Chloride(Cl): 0.005% max          Sulphate(SO4): 0.008% max
Iron(Fe): 0.005% max                  Silicon oxide(SiO2): 0.01% max
Phosphate(PO4): 0.005% max          PH of aqueous(1% solution): 3.5~5 max
Heavy metals (as Pb): 0.005%max          Aqueous solution test: acceptability max
[Character] It is a clear crystal or colorless acicular crystal with relative density of 1.85. It is soluble in water, insoluble in alcohol. At 16 ? 100ml water can solve 25g ammonium fluoroborate, and at 100? 97g. Its aqueous solution is weakly acidic. It decomposes when heated above 110? and sublimes when heated highly.
[Uses] It is used as resin finishing catalyst in printing and dyeing of textile, as gas flux to provide inert atmosphere, as flux in aluminum or copper welding, as catalyst in producing sand-type resin adhesive for metal casting and precise casting of magnesium, magnesium alloy and other oxidable metal. It is also used as flame retardant and chemical reagent, etc.
[Packing] Packing with plastic weaven bag lined with polythene plastic bag, 25kg perc bag.
Ammonium fluoroborate