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Merck
CN

232084

Molybdic acid

≥85.0% MoO3 basis, ACS reagent

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About This Item

CAS Number:
NACRES:
NB.24
PubChem Substance ID:
UNSPSC Code:
12352300
EC Number:
231-970-5
MDL number:
Assay:
≥85.0% MoO3 basis
Form:
powder
Grade:
ACS reagent
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InChI key

VLAPMBHFAWRUQP-UHFFFAOYSA-L

InChI

1S/Mo.2H2O.2O/h;2*1H2;;/q+2;;;;/p-2

SMILES string

O[Mo](O)(=O)=O

grade

ACS reagent

vapor density

6.2 (vs air)

assay

≥85.0% MoO3 basis

form

powder

reaction suitability

reagent type: catalyst
core: molybdenum

impurities

≤0.01% insol. dil. NH4OH

solubility

water: insoluble

density

3.1 g/mL at 25 °C (lit.)

anion traces

AsO43-, PO43- and SiO2: ≤0.001%, chloride (Cl-): ≤0.002%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.2%

cation traces

heavy metals: ≤0.003%

Quality Level

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Application

Molybdic acid can be used:
  • In the preparation of silica-supported molybdic acid catalyst for the synthesis of pyrano [2,3-c] chromene derivatives by condensation of aldehydes, malononitrile, and 4-hydroxycoumarin.
  • In the synthesis of Froehde reagent for the presumptive identification of alkaloids like opioids.
  • As a molybdenum source in the preparation of MoSe2.

General description

Molybdic acid is the hydrated form of molybdenum trioxide. It is used in the synthesis Froehde reagent.

Other Notes

Consists largely of an ammonium molybdate

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Made by molybdenum.
Lennartson A.
Nature Chemistry, 6(8), 746-746 (2014)
Hybrid Fabric/Molybdic Acid Modified Phenolic Resin Composites with Improved Anti-wear Properties.
Yang M, et al.
Tribology Transactions (2015)
Effect of high-temperature shock-wave compression on few-layer MoS2, WS2 and MoSe2.
Vasu K, et al.
Chemical Physics Letters, 582, 105-109 (2013)

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