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Disodium edetate dihydrate

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Disodium edetate dihydrate Basic information
Disodium edetate dihydrate Chemical Properties
  • Melting point:250 °C (dec.)(lit.)
  • Boiling point:>100 °C
  • Density 1.01 g/mL at 25 °C
  • refractive index n20/D 1.363
  • Flash point:>100℃
  • storage temp. 2-8°C
  • solubility 3  M NaOH: 100 mg/mL
  • pkapK1:1.99;pK2:2.67;pK3:6.16;pK4:10.26 (25°C)
  • form crystalline
  • color ≤5 (0.5 M)(APHA)
  • OdorOdorless
  • PH4.0-5.5 (25℃, 0.1M in H2O)
  • PH Range4 - 5 at 10 g/l at 23 °C
  • Water Solubility soluble
  • λmaxλ: 260 nm Amax: 0.145
    λ: 280 nm Amax: 0.025
  • BRN 3900609
  • Stability:Stable. Incompatible with strong oxidizing agents.
  • CAS DataBase Reference6381-92-6(CAS DataBase Reference)
  • EPA Substance Registry SystemEthylenediaminetetraacetic acid disodium salt dihydrate (6381-92-6)
Safety Information
Disodium edetate dihydrate Usage And Synthesis
  • Chemical PropertiesWhite or almost white, crystalline powder.
  • UsesChelating agent; sequestering agent
  • UsesEthylenediamine tetraacetic acid disodium dihydrate is used as chelating agent for metals and as pharmaceutic aid (chelating agent); as preservative in cosmetic products; anticoagulant.
  • DefinitionChEBI: A hydrate that is the dihydrate form of EDTA disodium salt.
  • Purification MethodsAnalytical reagent grade material can be used as primary standard after drying at 80o. Commercial grade material can be purified by crystallisation from water or by preparing a 10% aqueous solution at room temperature, then adding ethanol slowly until a slight permanent precipitate is formed, filtering, and adding an equal volume of ethanol. The precipitate is filtered off onto a sintered-glass funnel, is washed with acetone, followed by diethyl ether, and dried in air overnight to give the dihydrate. Drying at 80o for at least 24hours converts it to the anhydrous form. [Beilstein 4 IV 2451.]
Disodium edetate dihydrate Preparation Products And Raw materials
Disodium edetate dihydrate(6381-92-6)Related Product Information
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