Silicon dioxide

0.05 mol/L NaOH (0.05 mol/L sodium hydroxide), 99.5%- 15?5nm, 99.5%- 30?5nm, 99.5%- 50?5nm, 99.8%- specific surface area (BET): 200m2/g; particle size: 7-40nm, 99.8%- specific surface area (BET): 300m2/g; particle size: 7-40nm, 99.8%- specific surface area (BET): 380m2/g; particle size: 7-40nm, 99.9% metals basis, 99.99% metals basis- particle size: 10?m, 99.99% metals basis- particle size: 2?m, 99.99% metals basis- particle size: 5?m, 99.99%- 1-3mm, AR, GR, SP, Specific surface area: 237.2m2/g- total pore volume: 80cm3/g- average pore diameter: 14.21nm, Specific surface area: 511m2/g- total pore volume: 80cm3/g- average pore diameter: 6.31nm