The pH of a molybdate solution having a concentration greater than 10 mol / L was adjusted to be about 5.5, and an ammonium in seven molybdate was formed. The aqueous ammonia solution of molybdenum monoside can also be acidified, and the pH is also 6 ohid to produce ammonium.
Colorless large particles single-crockery, it is placed in air, and some ammonia is lost, heating to 170 ° C and decomposed into ammonia and molybdenum oxide. Soluble in water, strong acid and strong alkali solution, insoluble in ethanol, acetone.
, like other ammonium salts, this salt will decompose under certain conditions, produce molybdate acid and ammonia, or produce a decomposed reaction, producing other molybdate and ammonium salts, may also become ammonia gas.
In conventional analytical chemical applications, this reagent has been used to detect the presence of phosphorus, mainly for geological exploration, such as looking for phosphate. Also used as pigments, dehydrogenation catalysts, and desulfurization for petroleum and coking industries and production molybdenum powder.
ammonium molybdate: ammonium positive molybdic acid, ammonium di-molybdate, ammonium tetramolybdate, ammonium sevilum-molybdate
Molybdate, M3 ly - mixed ammonium chromate, ammonium chromate, ammonium tungstate <