Sodium Metasilicate Anhydrous

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 10th September 2025*

In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)

4 to 6 weeks approx. (Not guaranteed)

UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed

Applications

Cements and Binders
Pulp and Paper
Soaps and Detergents
Automotive applications

General

Sodium metasilicate is the chemical substance with formula Na
₂SiO
₃, which is the main component of commercial sodium silicate solutions.

Specification

Molecular Formula: Na2O3Si
Molecular Weight: 122.06 g/mol
Melting Point: 1090°C
Density at 20°C (g/cm³): 2.61
pH (1% soln 20°C): 12.5
Silicon Dioxide: 45.0-47.0%
Sodium Oxide: 49.5-51.5%

Hazards

Hazard Class: 8

Packing Group: 3

Hazard Phrases: May be corrosive to metals. Causes severe skin burns and eye damage. May cause respiratory irritation.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.

corrosive CLP Image Harmful CLP Image