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431346 Sigma-Aldrich

Ammonium molybdate tetrahydrate

ACS reagent, 99.98% trace metals basis

Synonym: Ammonium heptamolybdate tetrahydrate, Molybdic acid ammonium salt tetrahydrate

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Properties

Related Categories Ammonium Salts, Catalysis and Inorganic Chemistry, Chemical Synthesis, Essential Chemicals, Molybdenum Catalysts,
grade   ACS reagent
InChI Key   FIXLYHHVMHXSCP-UHFFFAOYSA-H
assay   81.0-83.0% MoO3 basis
  99.98% trace metals basis
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% (by ICP-OES)

Description

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.

Packaging

50, 250 g in poly bottle

Features and Benefits

Meets A.C.S. reagent specificatons.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
QA5076000

Documents

Certificate of Analysis

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Certificate of Origin

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Single- & multi-channel pipettes from BRAND
Protocols & Articles
Peer-Reviewed Papers
15

References

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