Fresenius' Zeitschrift für analytische Chemie

, Volume 162, Issue 5, pp 325–327 | Cite as

Sodium hypochlorite as volumetric reagent

II. Indirect determination of oxidising agents
  • B. Singh
  • S. Singh


In presence of 5 N to 6 N hydrochloric acid, ferrous ethylenediamine sulphate was used as a reducing agent to determine indirectly potassium chlorate, potassium bromate, potassium metaperiodate, potassium dichromate, potassium ferricyanide, potassium permanganate, potassium persulphate, hydrogen peroxide, ceric sulphate and chloramine-T. An excess of ferrous ethylenediamine sulphate added to each of the substances in the acid medium was titrated with a standard solution of sodium hypochlorite. Iodine monochloride was used as catalyst and preoxidizer and chloroform was used as an indicator. Chloroform was coloured violet owing to the liberation of iodine during the titration and became very pale yellow at the end-point because of the formation of iodine monochloride.


Iodine Hydrochloric Acid Chlorate Permanganate Bromate 
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    Singh, B., and S. Singh: Anal. chim. Acta (Amsterdam) 14, 213 (1956); 15, 278 (1956); cf. Z. analyt. Chem. 155, 116 (1957); 156, 125 (1957).Google Scholar

Copyright information

© Springer-Verlag 1958

Authors and Affiliations

  • B. Singh
    • 1
  • S. Singh
    • 1
  1. 1.Department of ChemistryPanjab UniversityHoshiarpurIndia

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