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ChemicalBook--->CAS DataBase List--->27546-07-2

27546-07-2

27546-07-2 Structure

27546-07-2 Structure
IdentificationMore
[Name]

Ammonium dimolybdate
[CAS]

27546-07-2
[Synonyms]

AMMONIUM DIMOLYBDATE
AMMONIUM MOLYBDATE
AMMONIUM MOLYBDATE (DI)
AMMONIUM MOLYBDATE REAGENT
AMMONIUM MOLYBDATE TS
AMMONIUM MOLYBDENUM OXIDE (DI)
MOLYBDIC ACID
molybdate(mo2o72-),diammonium
Ammoniumdimolybdate=Diammoniumdimolybdate
Molybdic(Ⅵ) acid
Molybdic(VI) acid
Ammoniummolybdate(di),Mo56.5%
Ammoniumdimolybdate,99%
Ammonium molybdenum oxide ((NH4)2Mo2O7)
Diammoniumdimolybdat
molybdate, diammonium
Diammonium dimolybdate
DIAMMONIUMHEPTAOXODIMOLYBDATE(2-)
[EINECS(EC#)]

231-970-5
[Molecular Formula]

H4Mo2NO8-3
[MDL Number]

MFCD00010882
[Molecular Weight]

337.91
[MOL File]

27546-07-2.mol
Chemical PropertiesBack Directory
[Melting point ]

300 °C
[density ]

3.1
[storage temp. ]

Sealed in dry,Room Temperature
[solubility ]

soluble in H2O
[form ]

Powder
[color ]

white
[Water Solubility ]

Soluble in water.
[Exposure limits]

ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 1000 mg/m3
[CAS DataBase Reference]

27546-07-2(CAS DataBase Reference)
[EPA Substance Registry System]

27546-07-2(EPA Substance)
Hazard InformationBack Directory
[Chemical Properties]

white powder(s); obtained by crystallization from a solution of MoO3 containing excess NH3; used as a high purity source for the preparation of Mo metal [KIR8l] [ALF93]
[Flammability and Explosibility]

Notclassified
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S24/25:Avoid contact with skin and eyes .
[TSCA ]

Yes
[HS Code ]

28417010
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Ammonium molybdate
Questions And AnswerBack Directory
[Physical Properties]

Colorless, monoclinic crystal; density 2.276 g/cm3; decomposes on heating; soluble in water (decomposes); also soluble in acid; insoluble in alcohol and liquid ammonia.
[Uses]

Ammonium molybdates are used to prepare high purity grade molybdenum metal powder, sheet, or wire; for colorimetric analysis of phosphates and arsenates; for decorating ceramics; and as catalysts.
[Preparation]

Ammonium molybdate is prepared by treating molybdenum oxide with excess ammonia in an aqueous solution. The crystals are obtained after evaporation of water.
MoO3 + 2NH3 + H2O → (NH4)2MoO4
[Reactions]

Decomposes on heating or on treatment with alkalies; reacts with lead chloride and other metal salts to form their metal molybdates:
(NH4)2MoO4 + PbCl2 → PbMoO4 + 2NH4Cl
Reacts with phosphates or arsenates to form ammonium phosphomolybdate (NH4)3PO4•12MoO3, or ammonium arsenomolybdate, (NH4)3AsO4•12MoO3.
Well-known Reagent Company Product InformationBack Directory
[Alfa Aesar]

Ammonium molybdate (di), Mo 56.5%(27546-07-2)
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