Please Note: We are not able to ship this product to Northern Ireland.

Sodium Metasilicate Pentahydrate

Price: £7.63
Stock Availability:

Compare all Pack Sizes

Stock Availability
On Shelf - Approx. UK delivery date: Wednesday the 17th 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
  • Making Detergent
  • Making Metal Cleaner
  • Used to Coat paper
  • Making Soaps and Detergents
  • Automotive Applications
  • Binding Agent - for cement
  • Egg Preservative

What is Sodium Metasilicate Pentahydrate? Iis an inorganic compound, with the chemical formula Na₂SiO₃·5H₂O, that is commonly found as a white, crystalline or granular substance. It is highly soluble in water and forms an alkaline solution upon dissolution. Sodium Metasilicate Pentahydrate is also known by alternate names such as Sodium Silicate Pentahydrate or Disodium Metasilicate Pentahydrate. 

Consistent Quality: We source only high-quality Sodium Metasilicate Pentahydrate, ensuring reliable and consistent performance in industrial, cleaning, and laboratory applications.

Shipped from Manchester, UK Facility: Sourced and packaged in non-toxic, chemical-resistant containers to ensure safe handling and maintain product quality during transport.

Frequent Uses

Water Treatment
Employed in water treatment to control pH and prevent scaling in water systems. It helps to remove impurities, disperse suspended solids, and protect pipes and equipment from corrosion, making it suitable for both industrial and municipal water treatment.

Laboratory Reagent
As a reagent in laboratories for various chemical reactions and processes. It is commonly used in the preparation of alkaline solutions, as a dispersing agent, and in the synthesis of certain compounds, including silicates and other materials.

Pulp and Paper Industry
To improve the efficiency of pulping and bleaching processes. It helps to prevent scaling in equipment and improves.

  • 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

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: Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Immediately call a POISON CENTER or doctor/physician. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

corrosive CLP Image Harmful CLP Image

Cas No: 10213-79-3
Einecs No: 229-912-9
UN3253

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd