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Sodium ethoxide

Sodium ethoxide
Sodium ethoxide
CAS No.
141-52-6
Chemical Name:
Sodium ethoxide
Synonyms
NE-21;ethoxysodium;causticalcohol;SODIUM ETHOXIDE;SODIUM ETHYLATE;Natriumethanolat;SODIUM ETHANOLATE;Sodiumethoxide,96%;Sodium ethaneolate;Sodium ethoxide 96%
CBNumber:
CB6100652
Molecular Formula:
C2H5NaO
Formula Weight:
68.05
MOL File:
141-52-6.mol

Sodium ethoxide 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
PH
13 (5g/l, H2O, 20℃)
Water Solubility 
Miscible
Sensitive 
Moisture Sensitive
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)
EPA Substance Registry System
Ethanol, sodium salt(141-52-6)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  F,C,Xi,N
Risk Statements  11-14-34-36/37/38-68/20/21/22-51/53-20/21/22
Safety Statements  8-16-26-43-45-36/37/39-36-61
RIDADR  UN 3274 3/PG 2
WGK Germany  1
3-8-10-23
TSCA  Yes
HazardClass  4.2
PackingGroup  II
HS Code  29051900
Hazardous Substances Data 141-52-6(Hazardous Substances Data)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H228 Flammable solid Flammable solids Category 1
Category 2
Danger
Warning
P210, P240,P241, P280, P370+P378
H251 Self-heating; may catch fire Self-heating substances and mixtures Category 1 Danger
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P235+P410 Keep cool. Protect from sunlight.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Sodium ethoxide price More Price(21)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 156248 Sodium ethoxide 95% 141-52-6 5g $38.5 2017-11-08 Buy
Sigma-Aldrich 156248 Sodium ethoxide 95% 141-52-6 100g $56.5 2017-11-08 Buy
TCI Chemical S0547 Sodium Ethoxide >95.0%(T) 141-52-6 100g $29 2017-12-01 Buy
TCI Chemical S0548 Sodium Ethoxide (ca. 20% in Ethanol) 141-52-6 500mL $39 2017-12-01 Buy
Alfa Aesar L06230 Sodium ethoxide, 96% 141-52-6 100g $27.9 2017-11-08 Buy

Sodium ethoxide Chemical Properties,Uses,Production

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.

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

Definition

ChEBI: An organic monosodium salt that has ethoxide as the counterion.

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

Preparation Products


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