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708860

Sigma-Aldrich

Potassium hydride

in paraffin

Sinonimo/i:

Potassium monohydride

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About This Item

Formula condensata:
KH
Numero CAS:
7693-26-7
Peso molecolare:
40.11
Numero CE:
231-704-8
Numero MDL:
MFCD00011357
Codice UNSPSC:
12352302
ID PubChem:
329762830
NACRES:
NA.22

Forma fisica

solid

Impiego in reazioni chimiche

reagent type: reductant

Stringa SMILE

[K]

InChI

1S/K.H
NTTOTNSKUYCDAV-UHFFFAOYSA-N

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Descrizione generale

Potassium hydride is a strong base and hydride donor to Lewis acids. It is generally employed in organic reactions like deprotonation, rearrangement, and elimination reactions. It is also used as a reducing agent to reduce hindered boranes and borates to substituted borohydrides.

Applicazioni

Potassium hydride in paraffin can be used as a base in:
  • Wittig reaction of various aldehydes with high Z selectivity.
  • Williamson ether synthesis to prepare substituted ethers from alcohols.
  • Polymerization of ethylene oxide to yield polyethylene glycols.

Proprietà fisiche

Melting point of paraffin used to prepare mixture is ~55-65 °C

Pittogrammi

FlameCorrosion
GHS02,GHS05

Avvertenze

Danger

Indicazioni di pericolo

H260,H314

Classi di pericolo

Skin Corr. 1B - Water-react 1

Rischi supp

EUH014

Codice della classe di stoccaggio

4.3 - Hazardous materials which set free flammable gases upon contact with water

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

No data available

Punto d’infiammabilità (°C)

No data available

Certificati d'analisi (COA)

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Potassium hydride in paraffin: a useful base for Williamson ether synthesis
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