Ammonium molybdate tetrahydrate CAS#12054-85-2

CAS Number: 12054-85-2
Chemical Formula: 4MoO3.3H2MoO4.4H2O.6H3N
Synonyms:

AMMONIUM MOLYBDATE, 4-HYDRATE
AMMONIUM MOLYBDATE - 4 H2O
AMMONIUM MOLYBDATE (PARA) TETRAHYDRATE

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Ammonium molybdate tetrahydrate CAS#12054-85-2

Ammonium molybdate tetrahydrate (also referred to as Ammonium heptamolybdate, chemical formula: (NH4)6Mo7O24)), appearing as a colorless solid. It can be manufactured through dissolving the molybdenum trioxide in excess amount of aqueous ammonia and evaporating the solution at the room temperature. It has many applications, e.g. as an analytic reagent for measuring content of phosphates, silicates, arsenates and lead; for the production of molybdenum metal and ceramics; for the production of dehydrogenation and desulphurization catalysts; for the fixing of metals; for electroplating; supplement in the crop fertilizer; as a negative stain in biological electron microscopy; as an analgesic in medical fields.

Ammonium molybdate tetrahydrate (AMT) is a molybdenum salt. Study of its extraction from nickel-molybdenum (Ni–Mo) ore by direct hydrometallurgical method has been reported. Its degradation by combustion to form elemental molybdenum powder using metallic reducers has been investigated.

Ammonium molybdate tetrahydrate Chemical Properties

Melting point	190 °C
Boiling point	190°C
bulk density	800kg/m3
density	2.498 g/mL at 25 °C (lit.)
storage temp.	Inert atmosphere,Room Temperature
solubility	H2O: 0.05 M at 20 °C, clear, colorless
form	Solid
color	White to yellow-green
Odor	Odorless
PH	4.0-5.5 (25℃, 0.05M in H2O)
PH Range	5 - 5.5
Water Solubility	400 g/L (20 ºC)
Merck	14,533
Exposure limits	ACGIH: TWA 0.5 mg/m3 NIOSH: IDLH 1000 mg/m3
Stability:	Stable. Incompatible with strong acids, strong oxidizing agents.
Cosmetics Ingredients Functions	BUFFERING
CAS DataBase Reference	12054-85-2(CAS DataBase Reference)
EPA Substance Registry System	Molybdate [Mo7O24(6-)], hexaammonium, tetrahydrate (12054-85-2)
Absorption	cut-off at 360nm in H2O at 0.05M

Safety Information

Hazard Codes	Xi,Xn
Risk Statements	36/37/38-22-20/21/22
Safety Statements	26-37/39-36/37-36
RIDADR	3288
WGK Germany	1
RTECS	QA5076000
TSCA	Yes
HazardClass	8
HS Code	28417000

Product Application of Ammonium molybdate tetrahydrate CAS#12054-85-2

Ammonium molybdate tetrahydrate is widely utilized in cryo-negative staining which helps to visualize particles while preserving the sample. It is used as a catalyst to desulfurize thiophene and its derivatives. It serves as an analytical reagent to measure the amount of phosphates, silicates, arsenates and lead in an aqueous solution. It is also used in electroplating, in fertilizers for crops and in the production of molybdenum metal and ceramics. It is used as an analgesic in medical field.

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