sodium silicate solid sodium silicate CAS NO:1344-09-8 sodium silicate EINECS NO:239-981- ... 7 sodium silicate purity:99% sodium silicate solidsodium silicate CAS NO:1344-09-8 sodium silicate EINECS NO:239-981 ... +SiO2),%≥ 99Sodium oxide (Na2O), % :33 (+-1.0 )29+-1.023+-1.0Silica oxide (SiO2), % :66 (+-1.0 )69+-1.076+-1.0Fe, % ≤ 0.05Insolubles in water,% ≤ 1packing ...