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Merck

431346

Ammonium molybdate tetrahydrate

ACS reagent, 99.98% trace metals basis

Synonym(s):

Ammonium heptamolybdate tetrahydrate, Molybdic acid ammonium salt tetrahydrate

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About This Item

Linear Formula:
(NH4)6Mo7O24 · 4H2O
CAS Number:
12054-85-2
Molecular Weight:
1235.86
NACRES:
NA.55
PubChem Substance ID:
329756311
UNSPSC Code:
12161600
EC Number:
234-320-9
MDL number:
MFCD00167059

Key Documents

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Product Name

Ammonium molybdate tetrahydrate, ACS reagent, 99.98% trace metals basis

InChI key

FIXLYHHVMHXSCP-UHFFFAOYSA-H

InChI

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

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

grade

ACS reagent

agency

suitable for SM 5210

description

for inorganic trace analysis

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)

Quality Level

200

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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.

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.

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCP4585
MKCP4584
MKCK0590
MKCG8681
MKCF4868

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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)
Direct reduction of ammonium molybdate to elemental molybdenum by combustion reaction.
Manukyan K, et al.
Chemical Engineering Journal, 168(2), 925-930 (2011)
Influence of vacuum annealing on the structural and photoelectrochemical properties of nanocrystalline MoBi2S5 thin films.
Pawar NB, et al.
Current Applied Physics, 14(3), 508-515 (2014)
A new and rapid method for the determination of glucose by measurement of rate of oxygen consumption.
Kadish AH, et al.
Clinical Chemistry, 14(2), 116-131 (1968)
A facile and efficient strategy for the preparation of stable CaMoO4 spherulites using ammonium molybdate as a molybdenum source and their excitation induced tunable luminescent properties for optical applications.
Raju GSR, et al.
Journal of Materials Chemistry, 22(31), 15562-15569 (2012)
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