How to use Prussian-blue in a sentence

prussian-blue
  • About the same time he showed by a wonderful series of experiments that the colouring matter of Prussian blue could not be produced without the presence Of a substance of the nature of an acid, to which the name of prussic acid was ultimately given; and he described the composition, properties and compounds of this body, and even ascertained its smell and taste, quite unaware of its poisonous character.

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  • It dissolves unchanged in concentrated sulphuric acid, and oxidizes readily in moist air, forming Prussian blue.

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  • This is heated to boiling, and the residue after filtration contains about 30% of Prussian blue.

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  • The metallic cyanides may be detected by adding ferrous sulphate, ferric chloride, and hydrochloric acid to their solution, when a precipitate of Prussian blue is produced; if the original solution contains free acid it must be neutralized by caustic potash before the reagents are added.

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  • It may be recognized by the violet coloration it gives when added to a very dilute solution of potassium bichromate in the presence of hydrochloric acid; by the orange-red colour it gives with a solution of titanium dioxide in concentrated sulphuric acid; and by the precipitate of Prussian blue formed when it is added to a solution containing ferric chloride and potassium ferricyanide.

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  • In the XXIIIrd Dynasty beads of a rich transparent Prussian blue glass were made, until the XXVIth.

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