Besides The Preceding There Is A Basic Prussian Blue Formed By
:
ON THE PRIMARY, BLUE.
simply submitting to the air the bluish-white precipitate which falls on
adding yellow prussiate of potash to green vitriol. This compound
dissolves entirely by continued washing with water, yielding a beautiful
deep blue solution, from which the colour may be thrown down in a solid
form by the addition of any salt. Probably it was this basic
preparation, so cheaply and easily made, that conferred upon Prussian
blue the character of staining paper. In name, there is also another