Determination of Diverse Organic Compounds

Diverse organic compounds may be determined by indirect iodometry. We give only one example here, that of ethacridine lactate, whose determination is described in the european pharmacopeia. 

The compound is precipitated by an excess of a standardized solution of potassium bichromate. The excess bichromate is titrated by adding sodium iodide. The liberated iodine is titrated by thiosulfate. Thus, the quantitative reaction exhibited by ethacridine lactate is not a redox reaction. It is a precipitation reaction. 

In this chapter, we continue to study titrations with halogens at their most common oxidation states. 

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