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Sodium Silicate

Technical Data Sheet

Sodium silicate is a generic name for chemical compounds with the formula Na2xSiyO2y+x or (Na2O)x·(SiO2)y, such as sodium metasilicate Na2SiO3, sodium orthosilicate Na4SiO4, and sodium pyrosilicate Na6Si 2O7. The anions are often polymeric. These compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts.  Sodium silicate is also the technical and common name for a mixture of such compounds, chiefly the metasilicate, also called waterglass, water glass, or liquid glass. The product has a wide variety of uses, including the formulation of cements, passive fire protection, textile and lumber processing, manufacture of refractory ceramics, as adhesives, and in the production of silica gel. The commercial product, available in water solution or in solid form, is often greenish or blue owing to the presence of iron-containing impurities.  In industry, the various grades of sodium silicate are characterized by their SiO2:Na2O weight ratio (which can be converted to molar ratio by multiplication with 1.032). The ratio can vary between 1:2 and 3.75:1.[1] Grades with ratio below 2.85:1 are termed alkaline. Those with a higher SiO2:Na2O ratio are described as neutral.

liquid sodium silicate & solid sodium silicate (cullet)

Liquid Sodium Silicate

Chemical Abstract Series Number (CAS No) : 1344-09-8

Solid Sodium Silicate (Cullet)

Sodium Silicate Glass

Specification Sodium Silicate

Be 40 R3 - Neutral Liquid Sodium Silicate

Na2O content (%w/w) : 7.90 - 8.40

SiO2 content (%w/w) : 26.90 - 28.5

Ratio (SiO2/Na2O) : 3.20 - 3.50

Specific Gravity at 27degC (g/ml) : Approx. 1.370

Baume at 27degC (Baume) : Approx. 39.16

Be 42 R3 - Neutral Liquid Sodium Silicate

Na2O content (%w/w) : Approx. 9.0

SiO2 content (%w/w) : Approx. 29.5 

Ratio (SiO2/Na2O) : 3.20 - 3.29 

Specific Gravity at 27degC (g/ml) : Approx. 1.41 

Baume at 27degC (Baume) : Approx. 42.16

Be 42 R2.1 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 11.85 - 12.55

SiO2 content (%w/w) : 24.30 - 28.00 

Ratio (SiO2/Na2O) : 2.00 - 2.10 

Specific Gravity at 27degC (g/ml) : 1.4078 - 1.4356  

Baume at 27degC (Baume) : 42.00 - 44.00

Be 42 R2.3 - - Base Liquid Sodium Silicate

Na2O content (%w/w) : 11.25 - 11.75 

SiO2 content (%w/w) : 26.00 - 27.00 

Ratio (SiO2/Na2O) : 2.25 - 2.35 

Specific Gravity at 27degC (g/ml) : 1.4078 - 1.4216   

Baume at 27degC (Baume) : 42.00 - 43.00

Be 44 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 11.75 - 12.40

SiO2 content (%w/w) : 27.50 - 28.50

Ratio (SiO2/Na2O) : 2.25 - 2.35

Specific Gravity at 27degC (g/ml) : 1.4356 - 1.4500

Baume at 27degC (Baume) : 44.00 - 45.00

Be 46 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 11.75 - 12.80 

SiO2 content (%w/w) : 28.70 - 30.40

Ratio (SiO2/Na2O) : 2.30 - 2.50 

Specific Gravity at 27degC (g/ml) : 1.4646 - 1,4796 

Baume at 27degC (Baume) : 46.00 - 47.00

Be 50 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 12.80 - 14.30

SiO2 content (%w/w) : 29.40 - 32.90

Ratio (SiO2/Na2O) : 2.25 - 2.35

Specific Gravity at 27degC (g/ml) : 1.4900 - 1.5500 

Baume at 27degC (Baume) : 47.68 - 51.45

Be 51 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 13.90 - 14.60

SiO2 content (%w/w) : 32.50 - 33.20

Ratio (SiO2/Na2O) : 2.25 - 2.35 

Specific Gravity at 27degC (g/ml) : 1.5426 - 1.5591

Baume at 27degC (Baume) : 51.00 - 52.00

Be 52 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 14.15 - 15.00

SiO2 content (%w/w) : 32.70 - 34.10

Ratio (SiO2/Na2O) : 2.25 - 2.35

Specific Gravity at 27degC (g/ml) : 1.5591 - 1.576

Baume at 27degC (Baume) : 52.00 - 53.00

Be 58 - Base Liquid Sodium Silicate

Na2O content (%w/w) : 15.75 - 16.75

SiO2 content (%w/w) : 36.20 - 38.60

Ratio (SiO2/Na2O) : 2.25 - 2.35

Specific Gravity at 27degC (g/ml) : 1.6478 - 1.6860

Baume at 27degC (Baume) : 57.00 - 59.00

SPECIFICATION SOLID SODIUM SILICATE (CULLET)

Grade Alkaline

Grade Alkaline

Grade Alkaline

Ratio SiO2/Na2O: 2.10 - 2.20 (weight) Ratio SiO2/Na2O: 2.17 - 2.27 (mole)

Na2O (%) : 31.25 - 32.26

SiO2  (%) : 67.74 - 68.75

Soluble Matter (%) : 99.50 min.

Grade Alkaline

Grade Alkaline

Grade Alkaline

Ratio SiO2/Na2O: 2.20 - 2.30 (weight) Ratio SiO2/Na2O: 2.27 - 2.37 (mole) Na2O (%) : 30.30 - 31.25

SiO2  (%) : 68.75 - 69.70 

Soluble Matter (%) : 99.50 min.

Grade Alkaline

Grade Alkaline

Grade Alkaline

Ratio SiO2/Na2O: 2.40 - 2.50 (weight) Ratio SiO2/Na2O: 2.48 - 2.58 (mole) Na2O (%) : 28.57 - 29.41 

SiO2  (%) : 70.59 - 71.43

Soluble Matter (%) : 99.50 min.

Grade Neutral

Grade Neutral

Grade Alkaline

Ratio SiO2/Na2O: 3.10 - 3.30 (weight) Ratio SiO2/Na2O: 3.20 - 3.41 (mole) Na2O (%) : 23.26 - 24.39

SiO2  (%) : 75.61 - 76.74 

Soluble Matter (%) : 99.00 min.

Grade Neutral

Grade Neutral

Grade Neutral

Ratio SiO2/Na2O: 3.30 - 3.50 (weight) Ratio SiO2/Na2O: 3.41 - 3.61 (mole) Na2O (%) : 22.22 - 23.26

SiO2  (%) : 76.74 - 77.78 

Soluble Matter (%) : 99.00 min.

Grade Neutral

Grade Neutral

Grade Neutral

Ratio SiO2/Na2O: 3.50 - 3.70 (weight) Ratio SiO2/Na2O: 3.61 - 3.82 (mole) Na2O (%) : 21.28 - 22.22 

SiO2  (%) : 77.78 - 78.72

Soluble Matter (%) : 98.50 min.

All grades have the same value for the following parameters:

All grades have the same value for the following parameters:

All grades have the same value for the following parameters:

Fe2O3 (%): 0.03 max.

Al2O3 (%):  0.10 max.

TiO2 (%): 0.03 max.

Purity (%): 98.50 min.

Downloads

Specification Silicate (pdf)

Download

Spec Cullet Update 2021 (pdf)

Download

Production Capacity of Cullet 100 MT/day or 36,000 MT/year

Production Capacity of Cullet 100 MT/day or 36,000 MT/year

Production Capacity of Cullet 100 MT/day or 36,000 MT/year

Production Capacity of Cullet 100 MT/day or 36,000 MT/year

Production Capacity of Cullet 100 MT/day or 36,000 MT/year

Production Capacity of Cullet 100 MT/day or 36,000 MT/year

Applications

Application Sodium Silicate in Industry

Detergent, Carton Box, Textile & Batik, Refractory Brick, Welding Rods, Oil Field, Ceramics, Construction, Recycle Paper, Foundry, Water Treatment 


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