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Ammonium heptamolybdate tetrahydrate

(ammonium molybdate) cryst. extra pure

Synonym(s):

Ammonium heptamolybdate tetrahydrate, Ammonium molybdate, Hexammonium heptamolybdate 4-hydrate

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About This Item

Linear Formula:
(NH4)6Mo7O24 · 4 H2O
CAS Number:
Molecular Weight:
1235.86
MDL number:
UNSPSC Code:
12352302
EC Index Number:
234-722-4

Quality Level

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

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 %

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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