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- Q2903711 subject Q9239288.
- Q2903711 abstract "Johann Jacob Diesbach was a Swiss pigment and dye producer known for first synthesising a blue pigment known as Prussian blue, aka iron blue or Berlin blue.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".".
- Q2903711 wikiPageWikiLink Q14975330.
- Q2903711 wikiPageWikiLink Q161179.
- Q2903711 wikiPageWikiLink Q172290.
- Q2903711 wikiPageWikiLink Q244274.
- Q2903711 wikiPageWikiLink Q421894.
- Q2903711 wikiPageWikiLink Q61485.
- Q2903711 wikiPageWikiLink Q64.
- Q2903711 wikiPageWikiLink Q6478678.
- Q2903711 wikiPageWikiLink Q9047.
- Q2903711 wikiPageWikiLink Q9239288.
- Q2903711 comment "Johann Jacob Diesbach was a Swiss pigment and dye producer known for first synthesising a blue pigment known as Prussian blue, aka iron blue or Berlin blue.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.".
- Q2903711 label "Johann Jacob Diesbach".