Or Ferricyanide Of Iron Is Formed By Adding The Red Prussiate Of
potash to a protosalt of iron. This blue is lighter and more delicate
than ordinary Prussian blue, and is believed to resist the action of
alkalies longer. It is a question whether the common Prussian blue
obtained by oxidizing the precipitate yielded by green vitriol and the
yellow prussiate is not in reality this variety. However that may be,
there is, as far as permanence goes, little or no difference between the
two kinds.
TTITLE ULTRAMARINES.
ARTIFICIAL ULTRAMARINES
Next:
Comprise The Varieties Known As French Ultramarine French BluePrevious:
Haerlem Blue Berlin Blue Mineral Blue Is A Lighter And
Viewed 348