History Of Blue
18 th Century: Prussian Blue
Modern Synthetic Pigment Dye
Around 1706 Diesbach was working in the laboratory of Johann Conrad
Dippel in Berlin. Using an extract of crushed cochineal insects, iron
sulphate and potash to create cochineal red lake, he used potash that
was mixed with Dippel"s animal oil. The result was a very pale red which
he concentrated to purple, later a deep blue.
While neither Diesbach nor Dippel knew what exactly happened the formula was the first modern Synthetic pigment, and an important invention, because at that time the alternative blue pigments were either not very successful or affordable for large scale use.
The pigment was first mentioned in a letter, the first of several, from Frisch to the president of the Royal Academy of Sciences, Gottfried Wilhelm Leibniz, dated March 1708. By August 1709, the pigment was being referred to as "Preussisch blau" and by November of that year, as "Berlinisch Blau".
While neither Diesbach nor Dippel knew what exactly happened the formula was the first modern Synthetic pigment, and an important invention, because at that time the alternative blue pigments were either not very successful or affordable for large scale use.
The pigment was first mentioned in a letter, the first of several, from Frisch to the president of the Royal Academy of Sciences, Gottfried Wilhelm Leibniz, dated March 1708. By August 1709, the pigment was being referred to as "Preussisch blau" and by November of that year, as "Berlinisch Blau".
Prussian Blue
Cyanide was isolated from Cherry Laurel
Cherry Seeds Contain Cyanide
First Isolated In 1782
Other Cyanogenic Glycosides In Plants
Prussian Blue To Cyanide
Toxicokinetics Of Cyanide
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History and Military Use
Cyanide off the Battlefield
Poison Chemistry: Cyanide
Prussian Blue: Antidote To Thallium Poisoning
Prussian Blue: Radiation Emergency
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