Sell Silica Acid

Silicic acidï¼?SG17 seriesï¼? silicic acid a colorless, transparent, irregular and glassy granule and its main ingredient is SiO2·nH2Oï¼?indissolvable in water and inorganic acidï¼?dissolvable in hydrofluoric acid and thick caustic alkali solution. It can be decomposed into SiO2 when being heated at 150â??. it is mainly used for decoloration of axunge and waxï¼?used as chemical reagent and flux in process of tungsten filament. Its technical parameters as followsï¼? Loss on ignition Involatile substance sulphate chloride iron Heavy metal 20-28% <=0.4% <=0.02% <=0.005% <=0.005 <=0.01