Molecular formula : KBF4
Molecular weight : 125.91
Property : White powder or gelatinous crystal without hygroscopicity, bitter. Hexad crystal could be got from its aqueous solution. Relative density 2.50; melting point 530°C; slightly soluble in water and hot ethanol; insoluble in cold ethanol. It will decompose when melting. It can be decomposed to boron trifluoride by strong acids like sufuric acid. It will product fluorides and borates; toxic!
Use : Used as the fluxing agent for thermal welding and copper welding; the raw material for producing boron alloy; as the filling agent for heavy abrasion wheel with resin as the abradant adhesive; for purifying light metal dregs when welding and melting silver and gold; as the raw material for making boron trifluoride and other villiaumites; also applied to electrochemical process and reagent
Product quality : Company standard
|
Index name |
Special grade |
First grade |
Index name |
Special grade |
First grade |
|
Potassium fluoroborate (KBF4), % ≥ |
98.0 |
97.0 |
Chloride(Cl) , % ≤ |
0.10 |
0.15 |
|
Phosphate (PO4) |
0.01 |
0.02 |
Sulfate(SO4) , % ≤ |
0.10 |
0.15 |
|
Iron (Fe) ,% ≤ |
0.005 |
0.008 |
Silicate(SiO2) , % ≤ |
0.01 |
0.02 |
|
Heavy metal (Pb) |
0.10 |
0.15 |
Potassium fluosilicate (K2SiF6), % ≤ |
Qualified |
Qualified |
Casing : Polythene plastic bag with woven bag outside, 25kg.
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