Hall, Clare H. (Clare Hamilton), b. 1880 · New York, D. Van Nostrand company · leaf 20
Heat the solution nearly to boiling and add an excess of microcosmic salt. Now make slightly alkahne with NH4OH, boil, stirring until precipitate assumes the charac- teristic appearance of ammonium manganese phos- phate. Treat the precipitate as in M. I., weighing as pyrophosphate (MnaPgO^). This… … verized sample in the flask A, and pour over it con- centrated HCl. At once connect A to B, in which is a solution of KI, the containing tubes being kept cool by filling the beaker about one half full of water. Now apply a burner to A and heat the solution until the sample is completely dissolved…
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