EDTA Disodium Salt Dihydrate 99% USP


EDTA disodium salt dihydrate is a white crystalline compound, which acts as a chelating agent and is used in a variety of applications.

  • To prepare TE buffer
  • As an anticoagulant
  • As a constituent of Flow buffer

Conforms to USP Standard

Minimum Assay: >99-99.5%
Molecular Formula: C10H14N2Na2O8.2H2O
Molecular Weight: 372.24 g/mol
Melting Point: 252 °C
pH (5% Solution): 4.0 – 6.0
Sulphates (SO4): <0.02%
Iron (Fe): <0.0003%
Calcium (Ca): Conforms
Chloride (Cl): <0.005%
Limit of Nitrotriacetic Acid: <0.007%
Loss on Drying: 8.7- 11.4%

Hazard Phrases: Causes serious eye irritation.

Prec Phrases: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.


Cas No: 6381-92-6
Einecs No: 205-358-3

HS CODE: 29224985


Following the UK’s departure from the EU on 1 January 2021, all European shipments are sent on a DAP Basis (Delivered at Place).

This means that the buyer will be liable for import VAT at their prevailing national rate and for orders over 150€ (including carriage) import duties will become chargeable at your prevailing national rate.

The Duty is ascertained by your national customs authority based on the HS Code of each product. The HS Code is shown in the “European Shipment” section of each product page.





Additional information

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100gm, 250gm, 500g, 1Kg, 2.5Kg, 5Kg