Potassium ethoxide: Difference between revisions
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
{{Chembox |
{{Chembox |
||
| Name = Potassium Ethoxide |
| Name = Potassium Ethoxide |
||
| ImageFile = [[File:Potassium Ethodixe Simple.png| |
| ImageFile = [[File:Potassium Ethodixe Simple.png|thumb]] |
||
| ImageSize = 373 × 193 |
|||
| IUPACName = potassium ethanolate |
| IUPACName = potassium ethanolate |
||
| OtherNames = Potassium ethanolate, Potassium Ethoxide Solution, Potassium ethylate, AC1Q1TXI, |
| OtherNames = Potassium ethanolate, Potassium Ethoxide Solution, Potassium ethylate, AC1Q1TXI, |
||
Revision as of 10:58, 16 November 2012
This sandbox is in the article namespace. Either move this page into your userspace, or remove the {{User sandbox}} template.
 | |
| Names | |
|---|---|
| IUPAC name
potassium ethanolate
| |
| Other names
Potassium ethanolate, Potassium Ethoxide Solution, Potassium ethylate, AC1Q1TXI,
| |
| Identifiers | |
3D model (JSmol)
|
|
| ECHA InfoCard | 100.011.845 |
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
| Properties | |
| C2H5KO | |
| Molar mass | 84.16 g mol-1 [1] |
| Appearance | Yellow or Off-White Powder[2] |
| Density | .894 g/mL [3] |
| Melting point | 250 °C |
| Reacts | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Properties
Potassium Ethoxide, also known as potassium ethanolate, is a an off-white or yellow powder with the chemical formula of C2H5KO. Potassium Ethoxide is an alkoxide and potassium salt consisting of chain of two carbon atoms, followed by a negatively charged oxygen and a positively charged potassium. Potassium Ethoxide contains an ethoxide ion, the conjugate base of ethanol, which makes this compounds extremely basic. Due to the basicity of this compound, it reacts violently with water, yielding hydroxide and ethanol.
Uses
Potassium Ethoxide is mainly used in the preparation of other compounds, though usually similar and simpler compounds such as Potassium Methoxide and Sodium Methoxide are used in favor of Potassium Ethoxide. Due to the ionic and basic properties of Potassium Ethoxide, the compound works well as a catalyst in many reactions[4], such as elimination reactions, where it is used to remove two substituents from another molecules. Potassium Ethoxide can also be used for transesterfication reactions. See Reactions.
Safety
Potassium Ethoxide is stable, but also both flammable and corrosive. The compound reacts violently with water. If the compound comes into contact with damp air, it may lead to the heating and ignition of the solid powder. Keep separated from air, moisture, water, acids, oxidzing agents, and reducing agents. [5] Can also cause severe skin burns. [6]
Reactions
An example of an elimination reaction would potassium ethoxide in ethanol reacting with isobutylbromide to produce isobutylene, ethanol and potassium bromide. File:E2 Elimination Reaction.png
References
- ^ [1], n.pag. SigmaAldrich. Web. 19 Oct 2012. <http://www.sigmaaldrich.com/catalog/product/aldrich/333379?lang=en®ion=US>.
- ^ [2], n.pag. World Of Chemicals. Web. 19 Oct 2012. <http://www.worldofchemicals.com/wochem/pub/chempotassium-ethoxide.html>.
- ^ [3], n.pag. PubChem. Web. 19 Oct 2012. <http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=23670592>.
- ^ [4], n.pag. Alibaba. Web. 19 Oct 2012. <http://dzlongteng.en.alibaba.com/product/233510085-201341059/Potassium_ethoxide_powder.html>..
- ^ [5], n.pag. CasLAb. Web. 19 Oct 2012. <http://www.caslab.com/Potassium_ethoxide_CAS_917-58-8/>.
- ^ [6], n.pag. chemexper. Web. 19 Oct 2012. <http://www.chemexper.com/chemicals/supplier/cas/917-58-8.html>.