Lithium Aluminum Hydride Assay Suitable for the Organic Chemistry Laboratory

Shlomo Levinger, Shira Hirsch, Amnon Albeck

Research output: Contribution to journalArticlepeer-review


Lithium aluminum hydride (LAH), as well as other aluminum and boron hydrides lose their activity due to interaction with moist, oxygen and CO2 even under good storing conditions. Discarding of such deteriorated reagents is neither economical or safe nor environmentally sound. Therefore, a convenient and fast assay for determining the quantity of reactive hydrides is desired. Such an assay for LAH, both as powder and in solution, is described. The method is based on the consumption of the reagent by excess methyl benzoate and calculation of its quantity from the ratio of the produced benzyl alcohol to the unreacted ester, as deduced from the integrated 1H NMR spectrum of the reaction mixture. The procedure is easily performed and particularly adapted for the organic chemistry laboratory environment.

Original languageEnglish
Pages (from-to)756-758
Number of pages3
Issue number4
StatePublished - Apr 2016

Bibliographical note

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


  • Analytical Methods
  • Hydrides
  • Lithium Aluminum Hydride
  • NMR spectroscopy


Dive into the research topics of 'Lithium Aluminum Hydride Assay Suitable for the Organic Chemistry Laboratory'. Together they form a unique fingerprint.

Cite this