1.01181

Ammonium heptamolybdate tetrahydrate

(ammonium molybdate) powder extra pure

• Synonym(s): Ammonium heptamolybdate tetrahydrate, Ammonium molybdate, Hexammonium heptamolybdate 4-hydrate
• Linear Formula: (NH₄)₆Mo₇O₂₄ · 4 H₂O
• CAS Number: 12054-85-2
• Molecular Weight: 1235.86
• MDL number: MFCD00167059
• UNSPSC Code: 12352302
• EC Index Number: 234-722-4
• NACRES: NB.21

Properties

• Quality Level: 100
• form: solid
• pH: 5.3 (20 °C, 50 g/L in H₂O)
• mp: 90 °C (Elimination of water of crystallisation)
• solubility: 400 g/L
• density: 2.498 g/cm³ at 20 °C
• bulk density: 800 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/Mo.H3N.H2O.O/h;1H3;1H2;/q;;;-2/p+1
• InChI key: XCOMAVCHADVANQ-UHFFFAOYSA-O

Description

Application

• A Novel Hydro-Thermal Synthesis of Nano-Structured Molybdenum-Iron Intermetallic Alloys at Relatively Low Temperatures.: This study explores the hydro-thermal synthesis of nano-structured molybdenum-iron intermetallic alloys using ammonium heptamolybdate tetrahydrate, highlighting its application in advanced material synthesis (El-Geassy et al., 2023).


• Alternative Preparation of Improved NiMo-Alumina Deoxygenation Catalysts.: The research focuses on the use of ammonium heptamolybdate tetrahydrate in the preparation of NiMo-Alumina catalysts for deoxygenation reactions, emphasizing its role in catalytic chemistry (Priecel et al., 2020).


• Chromatographic identification of "green capping agents" extracted from Nasturtium officinale (Brassicaceae) leaves for the synthesis of MoO(3) nanoparticles.: This paper discusses the synthesis of MoO3 nanoparticles using ammonium heptamolybdate tetrahydrate and green capping agents, showcasing its relevance in green chemistry and nanotechnology (Shaheen & Ahmad, 2020).


• Preparation of h-MoO3 and α-MoO3 nanocrystals: comparative study on photocatalytic degradation of methylene blue under visible light irradiation.: The study investigates the photocatalytic properties of MoO3 nanocrystals synthesized from ammonium heptamolybdate tetrahydrate, highlighting its application in environmental chemistry for pollutant degradation (Chithambararaj et al., 2013).


• Novel MoO2/carbon hierarchical nano/microcomposites: synthesis, characterization, solid state transformations and thiophene HDS activity.: This research focuses on the synthesis of MoO2/carbon composites using ammonium heptamolybdate tetrahydrate, emphasizing its catalytic applications in hydrodesulfurization (HDS) of thiophene (Avendaño et al., 2013).

Analysis Note

Assay (precipitative titration): ≥ 99.0 %
Identity: passes test
Chloride (Cl): ≤ 0.002 %
Phosphate, Arsenate, Silicate (as PO₄): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.02 %
Fe (Iron): ≤ 0.002 %

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable