Sodium Metasilicate Pentahydrate


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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.

  • Making Detergent
  • Making Metal Cleaner
  • Used to Coat paper
  • Making Soaps and Detergents
  • Automtotive Applications
  • Binding Agent – for cement
  • Egg Preservative

Molecular Formula: Na2SiO3 · 5H2O
Molecular Weight: 212.14 g/mol
Melting Point: 75 °C
Silicon Dioxide: 45.0-47.0%
Sodium Oxide: 49.5-51.5%
Iron (Fe): <200ppm

Cas Number: 10213-79-3

Einecs Number: 229-912-9

HS Code / Commodity Code: 2839110000

UN Number: 3253

Hazard Class: 8

Packing Group: 3

Hazard Phrases: H290,H314,H335

Prec Phrases: P260,P280,P303+P361+P353,P304+P340,P310,P305+P351+P338


Additional information

Weight N/A