Merck
All Photos(2)

708860

Sigma-Aldrich

Potassium hydride

in paraffin

Linear Formula:
KH
CAS Number:
Molecular Weight:
40.11
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

form

solid

reaction suitability

reagent type: reductant

SMILES string

[K]

InChI

1S/K.H

InChI key

NTTOTNSKUYCDAV-UHFFFAOYSA-N

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General description

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.

Application

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.

Packaging

5, 25 g in poly bottle

Physical properties

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

Pictograms

FlameCorrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Skin Corr. 1B - Water-react. 1

Supplementary Hazards

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

No data available

Flash Point(C)

No data available

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

More documents

Quotes and Ordering

Synthesis of heterobifunctional polyethylene glycols: Polymerization from functional initiators
Vojkovsky T, et al.
Polymer, 105(27), 72-78 (2016)
Potassium hydride in paraffin: a useful base for Williamson ether synthesis
Huang H, et al.
Tetrahedron Letters, 51(27), 3545-3546 (2010)
Potassium Hydride
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2007)
Potassium hydride in paraffin: A useful base for organic synthesis.
Taber DF and Nelson CG
The Journal of Organic Chemistry, 71(23), 8973-8974 (2006)
Stefan D Anker et al.
European journal of heart failure, 17(10), 1050-1056 (2015-05-27)
Hyperkalaemia in heart failure patients limits use of cardioprotective renin-angiotensin-aldosterone system inhibitors (RAASi). Sodium zirconium cyclosilicate (ZS-9) is a selective potassium ion trap, whose mechanism of action may allow for potassium binding in the upper gastrointestinal tract as early as

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