... slightly colored, transparent or translucent viscous liquid.Uses: Mainly used for paper, soap, construction, precision casting, anti-corrosion materials, ... sieve, silica, absorbent, such as the main raw material for production. GB this company on the basis of five categories ... 0-2.2Fe%≤0.02/0.05Sodium oxide(Na2O)%≥ 9.5Silica(Si2O)%≥ 22.1Water Insoluble%≤0.2/0.4 Solid Sodium Silicate (Mol rate:3.0-3 ...