Specification :

Appearance: White granules
Specifications
SiO2: 99.90%
Original particle size ( nm) : 15-30
Mean particle size ( D50) um: 4.0
Drying Loss ( 105 degree, 2h) : 4.0 larger
Heating Loss ( 1000 degree, 2h) : 5.0 larger
PH Value: 5-7
DOP absorption ( mL / 100g) : 300
Specific surface area Acreameter: 180-240m2 / g
Sieve residue ( 45um) : 0
Density ( g / cm3) : 0.07-0.10
Package: 10kg / bag