431346

Ammonium molybdate tetrahydrate

ACS reagent, 99.98% trace metals basis

• Synonym(s): Ammonium heptamolybdate tetrahydrate, Molybdic acid ammonium salt tetrahydrate
• Linear Formula: (NH₄)₆Mo₇O₂₄ · 4H₂O
• CAS Number: 12054-85-2
• Molecular Weight: 1235.86
• EC Number: 234-320-9
• MDL number: MFCD00167059
• UNSPSC Code: 12161600
• PubChem Substance ID: 329756311
• NACRES: NA.55

Properties

• grade: ACS reagent; for inorganic trace analysis
• 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 (PO₄^3-): ≤5 ppm; sulfate (SO₄^2-): ≤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

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.

Features and Benefits

Meets A.C.S. reagent specificatons.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable