Used for resin, rubber, paint, insulate electric, plastic fill material,artificial marble the filling .

Specification	Measure Unit	HF-05	HF-08	HF-10
AL(OH)3	%	≥99.6	≥99.6	≥99.6
SiO2	%	≥0.05	≥0.05	≥0.04
Fe2O3	%	≥0.02	≥0.02	≥0.02
Na2O	%	≥0.30	≥0.30	≥0.30
PH	20.0g/100ml	7.5-9.8	7.5-9.8	7.5-9.8
Means size	u m	3-6.5	7-10	10-13
Whiteness	%	≥97	≥97	≥97
Loose packed	g/cm3	≥0.6	≥0.6	≥0.7
Absorption of oil	ml/100g	≥45	≥42	≥40
Mositure	%	≥0.3	≥0.3	≥0.3
Refractive index	/	1.57	1.57	1.57