Sodium silicate is the common name for compounds with the formula Na2(SiO2)nO. A well-known member of this series is sodium metasilicate, Na2SiO3. Also known as waterglass or liquid glass, these materials are available in aqueous solution and in solid form. The pure compositions are colourless or white, but commercial samples are often greenish or blue owing to the presence of iron-containing impurities.

Sodium Silicate Solution 40%

Adhesive
Concrete and general masonry treatment
Detergent auxiliaries
Water treatment
Refractory use
Dye auxiliary

Total alkali (as Na2O): 9.2 – 9.7%
Wt ratio Sio2:Na2O: 3.18 – 3.28
Specific gravity @ 20°C: 1.410 – 1.430
Equivalent twadell: 82.0 – 86.0
Viscosity @ 20°C: 650 – 1200 cps

Cas Number: 1344-09-8

Einecs Number: 215-687-4

HS Code / Commodity Code: 28391910

UN Number: 3266

Hazard Class: 8

Packing Group: 3

Hazard Phrases: H290,H314

Prec Phrases: P261,P280,P305+P351+P338,P310