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Manganese Blue








An aqueous solution of permanganate of potash yields with baryta-water a
violet mixture, which afterwards becomes colourless, and deposits a blue
precipitate. This retains its colour after washing and drying, but
cannot be recommended as a pigment, being liable to suffer in contact
with organic substances, which deoxidize and decolourize the manganates
and permanganates.





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Previous: Iridium Blue



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