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Gold is a chemical element with the symbol Au (from Latin: aurum) and the atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal.
G 0502 (OTTO) Gold pellets1-3 mm , 99.99% Cas 7440-57-5 - used for the protective coatings on many artificial satellites.