Preparation []. The preparation of potassium hydride as a 1:1 homogenate with paraffin, termed KH(P), is reported. KH(P), a solid at room temperature, is stable without special handling. A powerful base that is useful in organic synthesis, it is also a dangerously reactive compound.For this reason it is sold commercially as a slurry (~35%) in mineral oil or sometimes paraffin wax to facilitate dispensing. taberdf@udel.edu The preparation of potassium hydride as a 1:1 homogenate with paraffin, termed KH(P), is reported. Properties . Potassium hydride in paraffin wax (25% w/w) Potassium hydride (100 g, 25–35 wt%, dispersion in mineral oil) in a sealable bottle was allowed to settle undisturbed for 7 days. : p.25 Potassium hydride is soluble in fused hydroxides (such as …
The only lab fire I’ve ever had was down to that hideous potassium hydride sludge (mixed with my own naivety and a sink with traces of waste acetone), but there was a JOC note last year about an air-stable, solid 1:1 mix of KH and paraffin that might make the sludge a thing of the past. Potassium hydride in paraffin. In a nitrogen atmosphere (grade 4.8) drybox, KH (35 % w/w dispersion in mineral oil) was washed with cyclohexane and filtered. Taber DF(1), Nelson CG. Potassium hydride, KH, is the inorganic compound of potassium and hydrogen. The preparation of potassium hydride as a 1:1 homogenate with paraffin, termed KH(P), is reported. Aldrich-708860; Potassium hydride in paraffin; CAS Number: 7693-26-7; Linear Formula: KH; find related products, papers, technical documents, MSDS & more at Sigma-Aldrich. AS.C provides organic laboratory chemicals to pharmaceutical companies, universities, biotech companies, healthcare industries, contract research organizations etc. Author information: (1)Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA. 2.4. The ref is JOC(2006),71(23), 8973
A powerful base that is useful in organic synthesis, it is also a dangerously reactive compound. A powerful base that is useful in organic synthesis, it is also a dangerously reactive compound.For this reason it is sold commercially as a slurry (~35%) in mineral oil or sometimes paraffin wax to facilitate dispensing. This reaction was discovered by Humphry Davy soon after his 1807 discovery of potassium, when he noted that the metal would vaporize in a current of hydrogen when heated just below its boiling point. Wittig condensation with aromatic, aliphatic, and α,β-unsaturated aldehydes proceeds with high Z selectivity.
The mineral oil was carefully decanted off, quenched with isopropanol, and discarded. Potassium hydride is not found spontaneously in nature. For this reason it is sold commercially as a slurry (~35%) in mineral oil or sometimes paraffin wax to facilitate dispensing.
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