Abstract
Determination of terpens (alcohol, aldehyde and keton) and consecutive titration of the mixtures have been developed by conductimetry in DMF with carbonyl reagent or Lewis acids. Terpens can be determined with phenyl hydrazine, silicon tetrachloride, magnesium chloride and aluminum chloride with their reactive ratios as follows; citronellal : phenyl hydrazine=1:1 and 1:2, geraniol : MgCl2=1:1 and 1:2, and menthol : SiCl4=1:1 and 1:2.
Consecutive conductimetric titration of the mixed solution with magnesium chloride gave satisfactory results, whereby the reaction advanced in the order -OH, -CHO and =CO. The limit of determination by this method was about 5×10-5 mol/l.
