Marggraf, Andreas Sigismund

Marggraf, Andreas Sigismund (1709—1782) German chemist and pioneer of analytical chemistry from Berlin in 1747 he announced his discovery of sugar in beets and devised a method nsing alcohol to extract it. 

Over time, chemists gradually began to realize that alum might contain a new element. In the mid-1700s, German chemist Andreas Sigismund Marggraf (1709-1782) claimed to have found a new earth called alumina in alum. But he was unable to remove a pure metal from alum. 

Lorenz Crell, Lebensgeschichte Andreas Sigismund Marggraf s, Directors der physikalischen Klasse der Konigl. PreuB. Akademie, Mitglieds der K. Akademie der Wissenschaften zu Paris und der Churfurstl. 

German chemist Andreas Sigismund Marggraf isolates a sweet substance from raisins that comes to be known as glucose. 

Andreas Sigismund Marggyaf, bom in Berlin in 1709, studied at the Bergakademie Freiberg and in other European seats of learning. He is known in chemical history for different reasons. He showed that aluminum oxide, calcium oxide and magnesium oxide are different earths . He also showed that soda and potash are different substances, sodium carbonate and potassium carbonate respectively. Possibly the color reactions in flames helped him to get these results. In 1758 Marggraf noted the yellow color when soda was heated and the red color from potash. 

In Berlin, Andreas Sigismund Marggraf (see Chapter 14 Magnesium and Calcium), director of the chemical laboratory at the Berlin Academy of Sciences 1754-1760, made many experiments with platinum. He observed traces of mercury in the native platinum and concluded that it was a residue from an amalgamation process. He repeated Lewis s experiments with sal ammoniac and obtained the same result... 

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