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  • 79884 - Ethylenediaminetetraacetic acid disodium salt dihydrate

79884 Supelco

Ethylenediaminetetraacetic acid disodium salt dihydrate

for HPLC, LiChropur, 99.0-101.0% (KT)

Synonym: Disodium ethylenediaminetetraacetate dihydrate, EDTA disodium salt, EDTA-Na2, Edathamil, Edetate disodium salt dihydrate, Sequestrene Na2

  • CAS Number 6381-92-6

  • Empirical Formula (Hill Notation) C10H14N2Na2O8 · 2H2O

  • Molecular Weight 372.24

  •  Beilstein/REAXYS Number 3900609

  •  EC Number 205-358-3

  •  NACRES NA.21



Related Categories Analytical Reagents, Analytical/Chromatography, Chromatography Reagents & Solvents, HPLC Buffers and Reagents
Quality Level   100
grade   for HPLC
assay   99.0-101.0% (KT)
quality   LiChropur
application(s)   HPLC: suitable
mp   248 °C (dec.) (lit.)
solubility   H2O: 0.1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   Al: ≤5 mg/kg
  Ba: ≤5 mg/kg
  Bi: ≤5 mg/kg
  Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤50 mg/kg
  Li: ≤5 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Mo: ≤5 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
UV absorption   λ: 260 nm Amax: ≤0.145
  λ: 280 nm Amax: ≤0.025
SMILES string   O.O.O.O.[Na+].[Na+].[Na+].[Na+].OC(=O)CN(CCN(CC([O-])=O)CC([O-])=O)CC(O)=O.OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O
InChI   1S/C10H16N2O8.2Na.2H2O/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;;2*1H2/q;2*+1;;/p-2



Chelator of divalent cations. Inhibits enzymes, such as metalloproteases, that require divalent cations for activity.

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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Dyestuff Analyses on Historic Objects by LC-ESI-MS/MS Using a Superspher RP-18 HPLC Column

Prior to the development of synthetic dyestuffs starting in the middle of the 19th century, organic dyes have only been gained from a variety of plants, fungi, lichens and insects. These colorants ha...
Prof. Dr. René Csuk and Dr. Annemarie E. Kramell
Keywords: High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Sample preparations, Separation, Solvents

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