93. Give the rationale for the acidimetric method of non-aqueous titration of aminocaproic acid according to the FS 42-2720-96 method: about 0.1 g of the substance (exactly weighed) is dissolved in 15 ml of glacial acetic acid and titrated with 0.1 mol/l perchloric acid solution until the color turns purple staining bluish-green (indicator - crystal violet). Mm. aminocaproic acid 131.2. Write the chemistry, derive the molar mass of the equivalent and calculate the titer of the analyzed solution based on the working solution.

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