Prussian blue (redirected from Preussisch Blau)

Prus·sian blue (prshn)

n.

See Berlin blue.

---

Prussian blue

The common name of potassium ferric hexacyanoferrate, a compound approved in the United States for treatment of thallium poisoning. Prussian blue gets its name from the fact that it was first used by artists in 1704 as a dark blue pigment for oil paints. It has also been used in laundry bluing and fabric printing.

Mentioned in: Heavy Metal Poisoning

---

Prussian blue,

n.pr a chemical stain used on microscopic preparations. It demonstrates the presence of copper by developing a bright blue color.

---

Prussian blue

ferric ferrocyanide; a dark blue dye, used to demonstrate ferric iron and in the treatment of chronic thallium poisoning.