It is mainly used in primary aluminiums melting.

	Item	Best quality	First quality	Qualifier
Molecular Formula:	Na3AlF6 Assay /% ≥	98	97	96
Na3AlF6	F             /% ≥	53	53	53
	Na         /% ≤	33	33	33
Appearance:White,shaded	Al         /% ≥	12.50	12.50	12.50
white or pink	NaF/AlF3 by Weight	1.35-1.55	1.35-1.55	1.35-1.55
	H2O     /% ≤	0.20	0.30	0.40
Density:2.95-3.05g/cm3	Loss on ignition  /% ≤	0.50	1.00	2.00
	SiO2    /% ≤	0.20	0.25	0.30
	Fe2O3  /% ≤	0.05	0.08	0.10
Bulk Density1.3-1.55g/l	SO3       /% ≤	0.30	0.50	0.60
	CaO      /% ≤	0.15	0.30	0.43
	P2O5    /% ≤	0.01	0.02	0.03