708860

Potassium hydride

in paraffin

• Synonym(s): Potassium monohydride
• Linear Formula: KH
• CAS Number: 7693-26-7
• Molecular Weight: 40.11
• EC Number: 231-704-8
• MDL number: MFCD00011357
• UNSPSC Code: 12352302
• PubChem Substance ID: 329762830
• NACRES: NA.22

Properties

• form: solid
• reaction suitability: reagent type: reductant
• SMILES string: [K]
• InChI: 1S/K.H
• InChI key: NTTOTNSKUYCDAV-UHFFFAOYSA-N

Description

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.

Physical properties

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

Safety Information

• Pictograms: GHS02,GHS05
• Signal Word: Danger
• Hazard Statements: H260,H314
• Precautionary Statements: P223 - P231 + P232 - P280 - P305 + P351 + P338 - P370 + P378 - P422
• Hazard Classifications: Skin Corr. 1B - Water-react 1
• Supplementary Hazards: EUH014
• 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