Croatica Chemica Acta, Vol. 30 No. 3, 1958.
Original scientific paper
The Determination of Individual Components in »B Complex« Dragees
Z. Klefin
; Analytical Department, »Pliva« Pharmaceutical and Chemical Works, Zagreb, Croatia, Yugoslavia
K. Šumanović
; Analytical Department, »Pliva« Pharmaceutical and Chemical Works, Zagreb, Croatia, Yugoslavia
Abstract
A method for determination of individual B vitamins in B complex dragees is described . Aneurine and riboflavine are determined photocolorimetrically. Nicotinamide is extracted with chloroform and titrated with O.1 N HClO4 in dioxane. Ca-panfothenate is determined complexometrically. p-Aminobenzoic acid is extracted with ether, and diazotated with 0.01 N NaNO2. Pyridoxine is determined by potentiometric titration of total chlorine (Aneurine HCl + Pyridoxine · HCl), after which the chlorine bound to aneurine is subtracted and pyridoxine · HCl calculated.
Keywords
Hrčak ID:
245535
URI
Publication date:
10.10.1958.
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