METHOD FOR QUANTITATIVE DETERMINATION OF SILICONE OIL OR SILOXANE

摘要

PURPOSE: A method for quantitative determination of silicone oil or siloxane is provided to obtain a method in which silicone oil or a siloxane is quantitatively determined. CONSTITUTION: In the method, silicone oil or a siloxane in the range of a trace amount in silicic acid or a pyrolytic oxide is quantitatively determined by the quantitative evaluation of an 1H-NMR spectrum in such a way that the silicic acid or the pyrolytic oxide is dispersed into an organic solvent, that a solid is separated in succession, that a transparent phase is set to a dry state, that a residual substance is taken into a solvent which is changed into heavy hydrogen and that the silicone oil or the siloxane is quantitatively evaluated by integrating methylsilyl protons in the 1H-NMR spectrum.