Key points are not available for this paper at this time.
Sodium dithionite (Na2S204) is the commonest and most convenient reagent for the deoxygenation and reduction of haem pigments. The danger of un- desirable side reactions between haem pigments and Na2S204 or its oxidation products has been re- marked by several workers (Hartridge
Dalziel et al. (Sun,) studied this question.