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Sodium hexametaphosphate (Grahams Salt)

Sodium hexametaphosphate (Grahams Salt)
Price: £6.93
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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
  • Used as a sequestrant and has applications within a wide variety of industries including as a food additive.
  • Used as a deflocculant in the production of clay-based ceramic articles.
  • Dispersing agent to break down clay and other soil types.
  • Claimed as a anti-staining and tartar prevention ingredient.

What is Sodium hexametaphosphate (Grahams Salt)? It is a salt of composition Na6[(PO3)6]. Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates (empirical formula: NaPO3), of which the hexamer is one, and is usually the compound referred to by this name. Such a mixture is more correctly termed sodium polymetaphosphate. They are white solids that dissolve in water.

Consistent Quality: We provide only high-quality Sodium hexametaphosphate (Grahams Salt), ensuring reliable and consistent performance for all applications.

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

Frequent Uses

Industrial Applications
Acts as a deflocculant in clay processing, helps clarify water in cleaning products, and is used in drilling fluids. 

Water Treatment
Can be used as a corrosion inhibitor in water systems.

Dental Care
It is a common ingredient in tooth whitening products. 

Textiles
Used as a dispersing agent and for water softening in textile dyeing processes.

  • Minimum Assay: >68%
  • Molecular Formula: (NaPO3)6 (Mainly)
  • Molecular Weight: 611.78
  • Solubility in Water (% weight): Soluble in water
  • Melting Point: 628 °C
  • Boiling Point: 1500°C
  • pH: 7.0
  • Solubility: Soluble in water
  • Chloride (Cl): <0.02%
  • Heavy Metals (as Pb): <0.005%
  • Iron (Fe): <0.01%

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 68915-31-1
Einecs No: 272-808-3

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd