1.01182

Ammonium heptamolybdate tetrahydrate

GR for analysis ACS,ISO,Reag. Ph Eur

• 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

• grade: ACS reagent
• Quality Level: 100
• agency: reag. ISO; reag. Ph. Eur.
• form: solid
• specific analyte(s): phosphate
• technique(s): photometry: suitable
• 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 outlines a novel hydro-thermal method for synthesizing molybdenum-iron intermetallic alloys using lower temperatures, highlighting a potential route for cost-effective and energy-efficient material production (El-Geassy et al., 2023).


• Alternative Preparation of Improved NiMo-Alumina Deoxygenation Catalysts.: This research discusses an alternative method for preparing NiMo-alumina catalysts with enhanced deoxygenation properties, potentially useful for synthetic and petrochemical applications (Priecel et al., 2020).


• Chromatographic identification of "green capping agents" extracted from Nasturtium officinale (Brassicaceae) leaves for the synthesis of MoO(3) nanoparticles.: The paper identifies plant-based capping agents for synthesizing molybdenum trioxide nanoparticles, contributing to greener nanotechnology practices (Shaheen & Ahmad, 2020).


• Preparation of h-MoO3 and α-MoO3 nanocrystals: comparative study on photocatalytic degradation of methylene blue under visible light irradiation.: This study compares the efficiency of hexagonal and orthorhombic molybdenum trioxide nanocrystals in degrading methylene blue, offering insights into their photocatalytic behaviors (Chithambararaj et al., 2013).


• Novel MoO2/carbon hierarchical nano/microcomposites: synthesis, characterization, solid state transformations and thiophene HDS activity.: The research introduces a new type of molybdenum dioxide-carbon composite material with applications in hydrodesulfurization, demonstrating significant industrial potential (Avendaño et al., 2013).

Analysis Note

Assay (as MoO₃): 81.0 - 83.0 %
Assay ((NH₄)₆Mo₇O₂₄ x 4 H₂O): ≥ 99.0 %
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.0005 %
Nitrate (NO₃): passes test
Phosphate (PO₄): ≤ 0.0005 %
Phosphate, Arsenate, Silicate (as PO₄): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (ACS): ≤ 0.001 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.005 %
K (Potassium): ≤ 0.002 %
Na (Sodium): ≤ 0.01 %
Pb (Lead): ≤ 0.001 %
Corresponds to ACS,ISO,Reag. Ph Eur

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable