1.01180

Ammonium heptamolybdate tetrahydrate

(ammonium molybdate) cryst. 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
• 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

• Ammonium Heptamolybdate Tetrahydrate in Nano-Structured Alloys: This compound is used in the hydro-thermal synthesis of nano-structured molybdenum-iron intermetallic alloys at relatively low temperatures, showing potential for advanced material applications in technology and industrial sectors (El-Geassy et al., 2023).


• Enhanced Photocatalysis: It is utilized in constructing Mo(2)C@MoO(x) heterostructures for enhanced Surface-enhanced Raman Scattering (SERS) applications, which is significant in the fields of sensing and environmental monitoring (Lai et al., 2022).


• Environmental Monitoring: Its applications extend to environmental science, where it is used in trace-level sensing of phosphate in soils, contributing to the monitoring and management of agricultural pollutants (Lu et al., 2021).


• Advancements in Catalysis: This compound plays a critical role in the synthesis of advanced catalytic materials for the deoxygenation of organic compounds, promoting more efficient chemical processes in industrial settings (Priecel et al., 2020).

Analysis Note

Assay (precipitative titration): 99.3 - 101.8 %
Identity: passes test
Insoluble substances: ≤ 0.005 %
Chloride (Cl): ≤ 0.002 %
Nitrate (NO₃): passes test
Phosphate (PO₄): ≤ 0.0005 %
Phosphate, Arsenate, Silicate (as PO₄): passes test
Sulfate (SO₄): ≤ 0.02 %
Heavy metals (as Pb): ≤ 0.001 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.005 %
Na (Sodium): ≤ 0.005 %
Magnesium and alcali salts: ≤ 0.02 %

Safety Information

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