Brandt, George

Brandt, Georg, Observations sur l arsemc, Recueil des Memoires. . . de... 

Brandt, Georg, "Untersuchung und Beschreibung einer neuen Art des... 

Brandt, D., W. George, C. Elathaway, andN. McClintock. 1992. An Engineer s Guide to Plant Eayout. Part 2. The Impact of Codes, Standards and Regulations. Chemical Engineering, 99(4), 89-94. 

Brandt, D., George, W., Hathaway C. and McClintock, N. (1992) Chem. Eng., NY, 99 (April) 97. Plant layout, Part 2 The impact of codes, standards and regulations. 

Gusenius, E.M. Beginnings of greatness in Swedish chemistry Georg Brandt (1694- 1768). Trans Kansas Acad Sci 70, no. 1-4 (Winter 1967) 413-425. 

Georg Brandt (1694-1768) solved the puzzle of blue glass. In his dissertation he described the new element and finally shed light on the mysterious blue. Brandt was considered a great chemist, but nevertheless there is no picture of him. 

Cobalt (Co, [Ar]3 J74s2), name from the German word kobold (evil spirit). Isolated (1735) by the Swedish chemist Georg Brandt. 

Cobalt - the atomic number is 27 and the chemical symbol is Co. The name derives from the German kobold for evil spirits or goblins , who were superstitiously thought to cause trouble for miners, since the mineral contained arsenic which injured their health and the metallic ores did not yield metals when treated with the normal methods. The name could also be derived from the Greek kobalos for mine . Cobalt was discovered in 1735 by the Swedish chemist Georg Brandt. 

In 1751 Baron Axel Fredrick Cronstedt (1722-1765) used some of the techniques he had learned from his teacher, Georg Brandt (1694—1768), to separate a new metal from copper-hke ore mined in Sweden. He expected to obtain pure copper instead, he ended up with a silver-white metal that did not have the chemical and physical properties of copper. He named this newly identified metal nickel, shortened from the German name the early miners had given the ore kupfernickel. ... 

Cobalt Co 1735(Stockholm Sweden) Georg Brandt (Swedish) 105... 

The metallic nature of arsenic was thoroughly established through the researches of J. F. Henckel (or Henkel), who in 1725 told how to prepare it by sublimation, and of Georg Brandt, who investigated its properties in 1733, noticed its amphoteric nature, and was surprised that "the same substance should dissolve in so many different menstrua (16, 21, 76). Bishop Johan Browall (1744), A.-M. Monnet (1774), and J. H. Pott (1720) also studied it (3,22). 

In 1730 or before, Georg Brandt prepared a dark blue pigment from an ore found at the Skila copper works (Riddarhytta) in Westmanland (39). Specimens of this fargcobalt are still preserved in the Cederbaum collection at Oskarshamn. Since the first accurate description of metallic cobalt is to be found in Brandt s dissertation on the half-metals in the Acta Literaria et Scientiarum, Sveciae for 1735, it has frequently been stated that cobalt was discovered in that year. Nils Zenz6n has shown, however, that this issue of die Acta was not published until 1739 and that the portion of Brandt s Diarium Chymicum which records his researches fiom the latter part of 1737 to the end of 1738 is merely a Swedish edition of the Dissertatio de semi-metallis. ... 

Shortly before this, Georg Brandt had discovered a new cobalt mineral at die Goran Mine at Bastnas, near Riddarhytta. "My curiosity, said he, did not allow me to postpone the chemical investigation until... 

In 1752 H. T. Scheffer published a detailed scientific description of platinum, or white gold, as he called it, and, with the aid of arsenic, succeeded in fusing it (42). Henric Theophil Scheffer was bom in Stockholm on December 28, 1710, where his father was secretary to the Royal Board of Mines. After serving an apprenticeship under Georg Brandt, he established his own laboratory and made trips to the mines to learn firsthand the close connection between smelting and assaying. 

Georg Brandt in 1746 prepared both crystalline and amorphous sodium carbonate and observed that the latter is not hygroscopic and that it ciystallizes more readily than does potassium carbonate (47). 

The reader will recall that Riddarhyttan was also the birthplace of Georg Brandt, the discoverer of cobalt. 

Georg Brandt s dissertation on the half metals. Actes Acad. d Upsal, 4, (1735). 

Georg Brandt isolates cobalt. Death of Herman Boerhaave. J. H. Pott states that pyrolusite contains the calx of a new metal. 

Cobalt was identified and described by Georg Brandt in 1735, but had to wait until the last decade of the nineteenth century before the new sources of metai supply from New Caledonia and Canada stimulated its metallurgical usage. 

Cobalt Co 27 George Brandt Sweden German word "kobald"meaning "goblin"... 

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