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Sodium silicate

Shanghai Qingfeng Chemical Factory

Sodium silicate

Country/Region China
City & Province Shanghai

Product Details

Sodium silicate

  • Chemical nameSodium silicate; water glass
  • Chemical formulaNa2OnSiO2

Property

Colorless, light yellow or greyish thick liquid. Basic in aqueous solution. React with acid (or CO2 in the air) to form silicic acid gel. Anhydrous sodium silicate is azure or olivine amorphous solid, without fixed melting point. Relative density increases when modulus lowers.

Use

Adhesive in papaer, casting, welding, construction industry; auxiliary in manufacture of detergent and soap; water-proofing additive, drying enhancer for concrete; also basic material for manufacture of molecualr sieve, silica gel, white carbon, sodium metasilicate.

Specification

Technical index
Neutral
Basic
Special type
Neutral
SiO2 %
26.0
29.2
25.7
26.0
Na2O %
8.2
12.8
10.2
7.00
Density Kg/L
1.368-1.394
1.526-1.599
1.436-1.465
1.318-1.342
Non-soluble in water %
≤0.40
≤0.80
≤0.60
≤0.6
Fe %
≤0.05
≤0.05
≤0.05
≤0.05
Modulus M
3.1-3.4
2.2-2.5
2.6-2.9
3.5-3.7

NoteFurther specification customizable.

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