Ammonium molybdate tetrahydrate

Catalog Number	ACM12054852-2
CAS	12054-85-2
Structure
Description	Ammonium MoL is the inorganic compound, normally encountered as the tetrahydrate, whose chemical formula is (NH4)6Mo7O24·4H₂O. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate, although “ammonium molybdate” can also refer to ammonium orthomolybdate, (NH4)2MoO4, and several other compounds. Potassium heptamolybdate, also obtained as the tetrahydrate, is very similar to the ammonium salt.
Synonyms	AmmoniumMolybdateAcs;AmmoniumMolybdateGr;AmmoniumMolybdateUsp-27;AmmoniumMolybdateUsp;Ammonium heptamolybate
Molecular Weight	1235.86
Molecular Formula	H32Mo7N6O28
Melting Point	190ºC
Purity	99%
Density	2.498
Appearance	White crystalline powder
Application	Determination of phosphates, arsenates, and lead.
Storage	room temp
EC Number	234-320-9
Hazard Codes	Xn
MDL Number	MFCD00167059

Q&A

What is the chemical formula of Ammonium molybdate tetrahydrate?

The chemical formula of Ammonium molybdate tetrahydrate is (NH4)6Mo7O24.

What is the appearance of Ammonium molybdate tetrahydrate?

Ammonium molybdate tetrahydrate appears as a colorless solid.

What is the solubility of Ammonium molybdate tetrahydrate in water?

The solubility of Ammonium molybdate tetrahydrate in water is 400 g/L at 20 ºC.

What is the main application of Ammonium molybdate tetrahydrate as an analytic reagent?

One of the main applications of Ammonium molybdate tetrahydrate is as an analytic reagent for measuring the content of phosphates, silicates, arsenates, and lead.

How is Ammonium molybdate tetrahydrate manufactured?

Ammonium molybdate tetrahydrate can be manufactured by dissolving molybdenum trioxide in an excess amount of aqueous ammonia and evaporating the solution at room temperature.

In what field is Ammonium molybdate tetrahydrate used as a negative stain?

Ammonium molybdate tetrahydrate is used as a negative stain in biological electron microscopy.

What safety statements are associated with Ammonium molybdate tetrahydrate?

Safety statements associated with Ammonium molybdate tetrahydrate are 26-37/39-36/37-36.

What is the boiling point of Ammonium molybdate tetrahydrate?

The boiling point of Ammonium molybdate tetrahydrate is 190°C.

What is the stability of Ammonium molybdate tetrahydrate?

Ammonium molybdate tetrahydrate is stable but incompatible with strong acids and strong oxidizing agents.

What is one hazard associated with Ammonium molybdate tetrahydrate?

One hazard associated with Ammonium molybdate tetrahydrate is that it is an irritant.