Technical Date Sheet
Commodity: Potassium aluminium fluoride
Chemical Names: Potassium fluoroaluminate;Potassium cryolite
Formula: KAlF4, K3AlF6
CAS: 13775-52-5
Properties:white or gray crystal powder; fineness: 20, 40, 100, 200
325mesh, composed by KF- AlF3, Molecular rate near 1.2, melting point
557℃- 580℃. Solubility in 1000g water: at 0℃: 0.8g; at 25℃: 1.42g,at 100℃: 4.58g.
Spec: (%)
F | Al | K | Fe2O3 | SO4 | H2O | |
Super grade | 50-52 | 17-18 | 29-32 | ≤0.01 | ≤0.05 | ≤1.2 |
I grade | 49-51 | 17-18 | 28-32 | ≤0.1 | ≤0.6 | |
II grade | 45-51 | 15-19 | 27-35 | ≤1.0 |
Application:It is used as welding flux in aluminum alloy and stainless steel, deaerating and an auxiliary solvent in aluminum alloy fabrication, also used as an active filler for glass, ceramic and friction compound.
Packing: in 25kg/50kg/1000kg plastic woven bags with film lining.
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