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Molybdenum uses
Compounds commonly used as starting compounds in preparative molybdenum chemistry are molybdenum trioxide, and ammonium and sodium molybdates.
The preparative chemistry of molybdenum is summarised in Fig. 2 starting with molybdenum disulfide, the principal ore of molybdenum. Molybdenum disulfide is chemically unreactive: we enter molybdenum chemistry through molybdenum trioxide, prepared by roasting molybdenum disulfide in air. Reactions of molybdenum trioxide are shown in the figure below.
Preparative chemistry of molybdenum. The highlighted compounds and molybdenum metal are those which find high volume applications