Determination of thiourea and some of its organic derivatives with sodium vanadate, hexacyanoferrate(III), Cerium(IV) sulphate, manganese(III) and manganese(IV).
The determination of thiourea and some of its organic derivatives with sodium vanadate, hexacyanoferrate(III), cerium(IV) sulphate, manganese(III) and manganese(IV) is described. A mixture of iodate and iodide is used as catalyst. Ferroin, N-phenylanthranilic acid and p-ethoxychrysoidine can be used as indicators.
The role of manganese(IV) compounds as oxidants - a review.
A historical review of the development of manganese(IV) chemistry and its application in analytical chemistry is presented. A brief presentation of the presence and importance of manganese(IV) in other areas of chemistry is also given.
Eine mercurimetrische Bestimmungsmethode von Thioharnstoff
ZusammenfassungMan kann den Gehalt einer Lösung an Thioharnstoff oder Thiosinamin feststellen, indem man mit einer eingestellten Quecksilber(II)-lösung nach dem „Dead-stop“-Verfahren unter Verwendung zweier Quecksilberelektroden titriert.