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Sodium Phosphate Dibasic ACS

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Price: £5.95

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Stock Availability

On Shelf - Approx. UK delivery date: Friday the 29th August 2025*

In bulk stock - ships within 10 - 15 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

Buffering Agent
Analytical Chemistry
Water Treatment
Research and Development

General

What is Sodium Phosphate Dibasic? It is an inorganic compound with the chemical formula Na₂HPO₄. It is one of several sodium phosphates. The salt is known in anhydrous form as well as hydrates Na₂HPO₄·nH₂O, where n is 2, 7, 8, and 12. All are water-soluble white powders. The anhydrous salt is hygroscopic.

Consistent Quality: We provide only high-quality Sodium Phosphate Dibasic, meeting the standards of the American Chemical Society (ACS), 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

Medical
In combination with sodium phosphate monobasic, is used to treat or prevent hypophosphatemia (low blood phosphorus levels).

Analytical Chemistry
It's employed as a reagent and buffer in analytical chemistry, particularly in chromatography and other techniques.

Water Treatment
Functions as a scale and corrosion inhibitor by preventing mineral deposits from forming in pipes and equipment and protecting pipes against rust.

Specification

FOOD GRADE E339 (ii)

C521 US Food Codex

Minimum Assay: >98.5%
Molecular Formula: HNa2O4P
Molecular Weight: 141.96
Appearance Form: White Crystalline powder
pH: 8.9 - 9.2 at 50 g/l at 25 °C
PO2 Content: 49.7%
Vapour density: 4.90 - (Air = 1.0)
Relative density: 1.520 g/cm3
Water solubility: soluble
Relative vapour density 4.90 - (Air = 1.0)
Arsenic (As): <1ppm
Fluoride (F): <10ppm
Lead (Pb): <1ppm
Cadmium (Cd): <1ppm
Mercury (Hg): <0.5ppm
Insoluble Matter: <0.02%
Loss on Drying: <0.1%

Hazards

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 7558-79-4

Einecs No: 231-448-7

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Code	Pack	Price
GPC7000-X	100g	£5.95
GPC7000-2X	250g	£9.95
GPC7000-5X	500g	£15.95
GPC7000-Y	1Kg	£19.95
GPC7000-5Y	5Kg	£72.95
GPC7000-25Y	25Kg	£283.95

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