Ammonium molybdate is used to prepare phosphomolybdates, to measure the amount of phophates, silicates, arsenates, lead in pigments, river water and sea water. It is also used as a negative stain in electron microscopy, in photogrphy, ceramics, paints. It is used in the production of molybdenum. It is used in the preparation of dehydrogenation and desulphurization catalysts.
