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Sodium ethoxide

Sodium ethoxide Structure
Sodium ethoxide
  • CAS No.141-52-6
  • Chemical Name:Sodium ethoxide
  • CBNumber:CB6100652
  • Molecular Formula:C2H5NaO
  • Formula Weight:68.05
  • MOL File:141-52-6.mol
Sodium ethoxide Property
  • 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 +15°C to +25°C.
  • solubility  :Soluble in ethanol and methanol.
  • form  :Liquid
  • color  :Yellow to brown
  • Specific Gravity :0.868
  • PH :13 (5g/l, H2O, 20℃)
  • Water Solubility  :Miscible
  • Sensitive  :Moisture Sensitive
  • Hydrolytic Sensitivity :7: 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 Reference :141-52-6(CAS DataBase Reference)
  • FDA UNII :1I9504387J
  • EPA Substance Registry System :Ethanol, sodium salt (141-52-6)
Safety
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H318-H228-H251-H314-H225-H371-H411
  • Precautionary statements P301+P330+P331-P210-P235+P410-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P260-P260h-P405-P501a
Sodium ethoxide Price More Price(38)
  • Brand: Sigma-Aldrich
  • Product number: 156248
  • Product name : Sodium ethoxide
  • Purity: 95%
  • Packaging: 5g
  • Price: $41.8
  • Updated: 2021/12/16
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  • Brand: Sigma-Aldrich
  • Product number: 156248
  • Product name : Sodium ethoxide
  • Purity: 95%
  • Packaging: 100g
  • Price: $57.4
  • Updated: 2021/12/16
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  • Brand: TCI Chemical
  • Product number: S0547
  • Product name : Sodium Ethoxide
  • Purity: >95.0%(T)
  • Packaging: 100g
  • Price: $29
  • Updated: 2021/12/16
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  • Brand: TCI Chemical
  • Product number: S0548
  • Product name : Sodium Ethoxide (ca. 20% in Ethanol)
  • Purity: 
  • Packaging: 500mL
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  • Brand: Alfa Aesar
  • Product number: L06230
  • Product name : Sodium ethoxide, 96%
  • Purity: 
  • Packaging: 500g
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Sodium ethoxide Chemical Properties,Usage,Production

  • Chemical Properties White powder, sometimes having brownish tinge; readily hydrolyzes to alcohol and sodium hydroxide.
  • Physical properties White or yellowish powder; hygroscopic; darkens and decomposes on exposure to air; decomposes in water forming sodium hydroxide and ethanol; dissolves in absolute ethanol.
  • Uses Sodium ethoxide is used in organic synthesis for condensation reactions. It also is a catalyst in many organic reactions.
  • Uses Sodium ethoxide, 21% w/w in ethanol is used as a strong base in organic synthesis. It finds application in various chemical reactions such as condensation, esterification, alkoxylation and etherifcation. It is actively involved in Claisen condensation, Stobbe reaction and Wolf-kishner reduction. It is an important starting material for the synthesis of ethyl ester and diethyl ester of malonic acid. In Williamson ether synthesis, it reacts with ethyl bromide to form diethyl ether.
  • Definition ChEBI: An organic monosodium salt that has ethoxide as the counterion.
  • Preparation Sodium 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
  • Hazard As for caustic soda, ethanol. Sodium hydroxide is formed when sodium ethylate is exposed to moisture.
  • Purification Methods It 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
Raw materials
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