Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
1.01182
Ammonium heptamolybdate tetrahydrate
GR for analysis ACS,ISO,Reag. Ph Eur
Synonym(s):
Ammonium heptamolybdate tetrahydrate, Ammonium molybdate, Hexammonium heptamolybdate 4-hydrate
About This Item
Recommended Products
grade
ACS reagent
Quality Level
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
SMILES string
[Mo].[N+H4].[O-2].O
InChI
1S/Mo.H3N.H2O.O/h;1H3;1H2;/q;;;-2/p+1
InChI key
XCOMAVCHADVANQ-UHFFFAOYSA-O
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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 ((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
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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