Accurate identification of the Essential oil of aerial parts of Salvia Officinalis was ... leaves has been evaluated as a corrosion inhibitor for steel in 1 M HCl solution ... have been reported to exhibit good inhibiting properties of steel in acidic and ... of the aerial part of Salvia Officinalis by hydrodistillation using a Clevenger type.
Cut the leaves into small pieces before distillation to expose more volume to the action of steam. Try distilling leaf paste, semi-dried or dried leaves and leaf powder. During distillation a small essential oil fraction escapes into the distillation water. Therefore collect the distillation water and extract it with hexane to recover the dissolved fraction.