[Molecular Formula]NH4BF4
[Molecular Weight] 104.86
[Properties]
Clear crystal or needle-like colorless crystal, specific gravity: 1.85, soluble in water(16°C: 25g/100ml water; 100°C: 96g/100ml water), its aqueous solution is of weak acidity, insoluble in alcohol, to decompose when heated to 110°C and sublime if being strongly heated.
[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.
[Quality Index] Enterprise Standard(ES)
|
Item
|
Excellent Grade
|
First Grade
|
Item
|
Excellent Grade
|
First Grade
|
|
NH4BF4, %≥
|
98.0
|
97.0
|
Chloride(Cl),% ≤
|
0.005
|
0.01
|
|
Phosphate(PO4), % ≤
|
0.01
|
0.02
|
Sulfate(SO4),% ≤
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0.10
|
0.15
|
|
Iron(Fe), % ≤
|
0.005
|
0.008
|
Silicate(SiO2),% ≤
|
0.01
|
0.02
|
|
Heavy Metal(Pb), % ≤
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0.10
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0.15
|
Water-soluble Test
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Qualified
|
Qualified
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[Package] Woven bag lined with polyethylene plastic bag, net weight: 25kg/bag.
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Inorganic fluorine chemical 
