Ammonium molybdate

Ammonium Molybdate is an odourless crystalline compound ranging in colour from white to yellow-green. Its chemical formula is as follows; (NH4)6Mo7O24.4H2O.

It is also called molybdic acid hexammonium salt tetrahydrate, ammonium molybdate tetrahydrate, and ammonium heptamolybdate tetrahydrate.

Uses

 * as an analytical reagent to find the presence of phosphates, silicates, arsenates and lead in pigments
 * in the production of molybdenum metal and ceramics
 * in the preparation of dehydrogenation and desulphurisation catalysts
 * in the fixing of metals
 * in electroplating
 * in fertilizers for crops.
 * as a negative stain in biological electron microscopy, typically in the 3-5% (vol/vol) concentration range and in the presence of trehalose [1]; or at saturated concentration to perform cryo-negative staining [2,3].