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Pt
Platinum

History

Platinum has become known in Europe since the 18 century, when German mathematician Antonio de Ulloa brought samples of the metal with the gold deposits of Peru. Platinum has long been not used as was harder to forge and casting. For some time it made false coins, so platinum cost twice less expensive than silver. In the 19th century from the platinum started prepare equipment for chemical experiments. The first example is Platinum receptacle for the storage of sulfuric acid weighs almost one pood. In 1852... 1857 French scholars St. Clair Devil and Debre invented a way of melting platinum in large quantities.

Nowadays

Until the second half of the 20th century most of the platinum used in the manufacture of jewelry. Now platinum is mainly used where chemical resistance is more: equipment for laboratories. The second consumer of platinum - oil industry, which requires platinum catalysts. Others using of platinum involve in its chemical properties: heat resistance, chemical resistance.

Date ASIA EUROPE USA
26/12/2009 1405.05 1460 1476
19/12/2009 1367.75 1367.75 1429
12/12/2009 1359.54 1430 1436
05/12/2009 1376.25 1376.25 1472
28/11/2009 1395.52 1395.52 1492.61
21/11/2009 1376.08 1438 1445
14/11/2009 1252.23 1311.102 1335.438
07/11/2009 1271.99 1331.79 1356.51
31/10/2009 1241.11 1299.47 1323.59
24/10/2009 1265.81 1325.32 1349.92
17/10/2009 1293.37 1293.37 1293.37
10/10/2009 1281.16 1339 1333
02/10/2009 1227.13 1296.88 1320.95
25/09/2009 1272.57 1328 1301
18/09/2009 1236.79 1294.94 1318.98
12/09/2009 1234.94 1293 1317
05/09/2009 1241.11 1299.47 1323.59
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