PHYSICAL PROPERTIES		CHEMICAL PROPERTIES
Grade	SN-200#	SiO2	≥ 89.60%
Color	White	Al2O3	≤ 4%
Specific Gravity	2.3 g/cm3	Fe2O3	≤ 1.5%
		CaO	≤ 0.6%
Moisture	≤ 2%	MgO	≤ 0.5%
Loss On Ignition	≤ 3%	Others	≤ 0.8%
PH	8-10	Pb, mg/kg	≤ 1
Bulk Density	0.45g/cm3	Water permeability %	≤ 2.0
Flow Rate (Darcy)	1.51-2.50	Arsenite mg/kg	≤ 1
Median Particle Size	26-35um	Heavy Metal	< 0.005%