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Sodium ethoxide

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Sodium ethoxide Basic information
Sodium ethoxide Chemical Properties
  • Melting point:260 °C
  • Boiling point:91°C
  • Density 0.868 g/mL at 25 °C
  • vapor density 1.6 (vs air)
  • vapor pressure <0.1 mm Hg ( 20 °C)
  • refractive index n20/D 1.386
  • Flash point:48 °F
  • storage temp. Store at R.T.
  • solubility Soluble in ethanol and methanol.
  • form Liquid
  • color Yellow to brown
  • Specific Gravity0.868
  • PH13 (5g/l, H2O, 20℃)
  • Water Solubility Miscible
  • Sensitive Moisture Sensitive
  • Hydrolytic Sensitivity7: reacts slowly with moisture/water
  • Merck 14,8539
  • BRN 3593646
  • Stability:Reacts violently with acids, water. Incompatible with chlorinated solvents, moisture. Absorbs carbon dioxide from the air. Highly flammable.
  • CAS DataBase Reference141-52-6(CAS DataBase Reference)
  • EPA Substance Registry SystemEthanol, sodium salt (141-52-6)
Safety Information
MSDS
Sodium ethoxide Usage And Synthesis
  • Chemical PropertiesWhite powder, sometimes having brownish tinge; readily hydrolyzes to alcohol and sodium hydroxide.
  • Physical propertiesWhite or yellowish powder; hygroscopic; darkens and decomposes on exposure to air; decomposes in water forming sodium hydroxide and ethanol; dissolves in absolute ethanol.
  • UsesSodium ethoxide is used in organic synthesis for condensation reactions. It also is a catalyst in many organic reactions.
  • PreparationSodium ethoxide is prepared by reacting sodium with absolute ethanol:
    2Na + 2C2H5OH → 2C2H5ONa + H2
    Sodium in small quantities is added to absolute alcohol at 10°C. The temperature is raised to warming (to about 38°C). The mixture is cooled again and sodium and absolute alcohol are added gradually followed by careful warming. The process is repeated to obtain a sufficient yield of the p
  • DefinitionChEBI: An organic monosodium salt that has ethoxide as the counterion.
  • HazardAs for caustic soda, ethanol. Sodium hydroxide is formed when sodium ethylate is exposed to moisture.
  • Purification MethodsIt is a hygroscopic powder which should be stored under N2 in a cool place. A likely impurity is EtOH which can be removed by warming at 60-80o under high vacuum. It is hydrolysed by H2O to yield NaOH and EtOH. Other impurities, if kept in air for long periods are NaOH and Na2CO3. In this case the powder cannot be used if these impurities affect the reactivity, and a fresh sample should be acquired [IR: Seubold J Org Chem 21 156 1956]. [Beilstein 1 H 311, 1 IV 1289.]
Sodium ethoxide Preparation Products And Raw materials
Sodium ethoxide(141-52-6)Related Product Information
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