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431346

Sigma-Aldrich

Ammonium molybdate tetrahydrate

ACS reagent, 99.98% trace metals basis

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Synonym(s):
Ammonium heptamolybdate tetrahydrate, Molybdic acid ammonium salt tetrahydrate
Linear Formula:
(NH4)6Mo7O24 · 4H2O
CAS Number:
Molecular Weight:
1235.86
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.55

grade

ACS reagent
for inorganic trace analysis

Quality Level

Agency

suitable for SM 5210

Assay

81.0-83.0% MoO3 basis
99.98% trace metals basis

form

powder

reaction suitability

reagent type: catalyst
core: molybdenum

impurities

≤0.005% insolubles

density

2.498 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.002%
nitrate (NO3-): passes test
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.02%

cation traces

Mg and allied cations: ≤0.01%
heavy metals: ≤0.001% (as lead)

SMILES string

N.N.N.N.N.N.O.O.O.O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O[Mo](O)(=O)=O.O[Mo](O)(=O)=O.O[Mo](O)(=O)=O

InChI

1S/7Mo.6H3N.10H2O.18O/h;;;;;;;6*1H3;10*1H2;;;;;;;;;;;;;;;;;;/q;;;;3*+2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/p-6

InChI key

FIXLYHHVMHXSCP-UHFFFAOYSA-H

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This Item
M1019A13431.93602
Ammonium molybdate tetrahydrate ACS reagent, 99.98% trace metals basis

Sigma-Aldrich

431346

Ammonium molybdate tetrahydrate

Essential Grade
Ammonium molybdate tetrahydrate BioReagent, suitable for cell culture, suitable for insect cell culture, 81.0-83.0% MoO3 basis

Sigma-Aldrich

M1019

Ammonium molybdate tetrahydrate

Essential+ Grade
Ammonium molybdate meets USP testing specifications

Sigma-Aldrich

A1343

Ammonium molybdate

-
form

powder

form

-

form

crystals

form

-

reaction suitability

reagent type: catalyst
core: molybdenum

reaction suitability

-

reaction suitability

-

reaction suitability

-

density

2.498 g/mL at 25 °C (lit.)

density

2.498 g/mL at 25 °C (lit.)

density

2.498 g/mL at 25 °C (lit.)

density

-

cation traces

Mg and allied cations: ≤0.01%, heavy metals: ≤0.001% (as lead)

cation traces

-

cation traces

-

cation traces

-

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

-

General description

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.

Application

Ammonium molybdate tetrahydrate may be used in the following processes:
  • As a precursor in the generation of calcium molybdate (CaMoO4) spherulites.
  • Synthesis of porous carbon-supported molybdenum dioxide (MoO2).
  • Preparation of Iodine-iodide-molybdate solution to determine glucose level by glucose oxidase method.
  • Preparation of polymer bulk heterojunction solar cells.
  • As a precursor in the synthesis of Mo-N-codoped TiO2 (titanium dioxide).
  • Synthesis of MoBi2S5 (molybdenum bismuth sulphide) thin films.
Applied in the ultrasonic synthesis of phase-pure praseodymium molybdate, Pr2Mo3O12.
Reagent used for oxidation of sulfides to sulfonyls.

Features and Benefits

Meets A.C.S. reagent specificatons.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Customers Also Viewed

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In-situ preparation of porous carbon-supported molybdenum dioxide and its performance in the oxidative desulfurization of thiophene.
Zhuang L, et al.
J. Mater. Sci., 49(16), 5606-5616 (2014)
Recovery and purification of molybdenum from Ni-Mo ore by direct air oxidation in alkaline solution.
Zhao Z, et al.
Hydrometallurgy, 103(1), 68-73 (2010)
Tetrahedron, 62, 11592-11592 (2006)
Organic photovoltaic devices incorporating a molybdenum oxide hole-extraction layer deposited by spray-coating from an ammonium molybdate tetrahydrate precursor.
Griffin J, et al.
Organic Electronics, 15(3), 692-700 (2014)
Enhanced visible light activity and mechanism of TiO2 codoped with molybdenum and nitrogen.
Cheng X, et al.
Materials Science and Engineering, B, 178(7), 425-430 (2013)

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