This section is from the book "A Text-Book Of Materia Medica, Pharmacology And Therapeutics", by George F. Butler. Also available from Amazon: A text-book of materia medica, pharmacology and therapeutics.
Definition. - Chiefly manganese dioxide with small amounts of other oxides of manganese, corresponding to not less than 80 per cent. of manganese dioxide.
Origin. - Manganese sulphate, 50; ammonia water, 250; solution of hydrogen dioxide, 250; water q. s.
Description and Properties. - A heavy, very fine black powder, without odor or taste; permanent in the air; insoluble in water or alcohol.
Dose. - 5-40 grains (0.3-2.60 Gm.) [4 grains (0.25 Gm.), U. S. P.].
 
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