Sodium Silicate


Executive standard: GB/T4209

 

1. Solid

Solid Indicators S350 S330 S280 S250
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Soluble solids,w/% ≥ 99.0 98.0 97.0 99.0 98.0 97.0 99.0 98.0 97.0 99.0 98.0 97.0
Iron (Fe),w/% ≤ 0.015 0.10 / 0.015 0.10 / 0.015 0.10 / 0.015 0.10 /
Aluminium oxide
(Al2O3),w/% ≤
0.15 0.30 / 0.15 0.30 / 0.15 0.30 / 0.15 0.30 /
Modulus 3.41~3.70 3.11~3.40 2.65~3.10 2.20~2.64

 

2. Liquid

Liquid Indicators L350-36 L330-37 L280-41 L250-47 L250-37
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Iron (Fe),w/% ≤ 0.01 0.03 / 0.01 0.03 / 0.01 0.03 / 0.01 0.03 / 0.01 0.03 /
Water insoluble matter, w/% ≤ 0.10 0.40 0.50 0.10 0.20 0.80 0.10 0.40 0.50 0.20 0.80 1.00 0.10 0.40 0.50
Density (20℃) / (g/ml) ≥ 1.332 1.345 1.397 1,483 1.345
Sodium Oxide
(Na2O), w/% ≥
7.5 8.2 10.2 12.8 9.5
SiO2, w/% ≥ 25.0 26.0 25.7 29.2 22.1
modulus 3.41~3.70 3.11~3.40 2.65~3.10 2.20~2.64 2.20~2.64

 

Applications of sodium silicate: Sodium silicate can be applied to the industry of silica, molecular sieve, silica gel, silica sol, detergent, casting and binders.