File:Guillermond-Glenard volumetric method for the determination of quinine (Alessandri 1895.50).png

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Guillermond-Glenard quinometric method for the volumetric determination of quinine

Summary

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Description
Italiano: Nel digestore A si pongono 10 g di scorza di china pretrattata (polverizzata, inumidita, mescolata con calce, seccata e nuovamente polverizzata) e 100 mL di etere etilico che scioglie chinina e chinidina, ma non la cinconina. Aprendo il rubinetto r si raccoglie l'etere filtrato e puro; in alternativa lo si riversa in A e si ripete. La soluzione viene poi acidificata con acido solforico, e titolata.
English: Digester A is filled with 10 g of pretreated cinchona bark (pulverized, wetted, mixed with lime, dried and again pulverized) and 100 mL of diethyl ether, which disssolves quinine and quinidine but not cinchonine. By opening stopcock r the clear ether extract is collected; else it is poured back in the digester. The solution is then acidified with sulphuric acid and titrated.
Date
Source Alessandri, P. E. Analisi Volumetrica Applicata Ai Prodotti Commerciali e Industriali; Ulrico Hoepli: Milano, 1895.
Author valeg96

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