A7302
Sigma-Aldrich

Ammonium molybdate tetrahydrate

ACS reagent, 81.0-83.0% MoO₃ basis

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Synonym

Ammonium heptamolybdate tetrahydrate

Molybdic acid ammonium salt tetrahydrate

Molecular Formula

(NH₄)₆Mo₇O₂₄ · 4H₂O

Molecular Weight

1235.86

CAS Number

12054-85-2

MDL number

MFCD00167059

PubChem Substance ID

24891201

EG/EC Number

234-320-9

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Properties

grade

ACS reagent

assay

81.0-83.0% MoO₃ basis

total impurities

≤0.005% Insoluble matter

density

2.498 g/mL at 25 °C(lit.)

anion traces

arsenate, phosphate, and silicate (as SiO₂): ≤0.001%

chloride (Cl^-): ≤0.002%

nitrate (NO₃^-): to pass test (limit about 0.003%)

phosphate (PO₄^-): ≤5 ppm

sulfate (SO₄^2-): ≤0.02%

cation traces

Mg and allied cations: ≤0.02%

heavy metals (as Pb): ≤0.001%

References

reference

Aldrich MSDS 1, 122:A / Corp MSDS 1 (1), 241:D / FT-IR 2 (3), 4769:C / FT-IR 1 (2), 1291:C / RegBook 1 (3), 3471:G / Sigma FT-IR 1 (2), 1029:D

Safety

Hazard Codes

Risk Statements

36/37/38

Safety Statements

WGK Germany

RTECS

QA5076000

Related Categories

... Routine Reagents > ACS Grade

... Catalysis and Inorganic Chemistry > Molybdenum

... Phosphorylation Analysis > Reagents and Controls for Phosphoprotein Analysis

MSDS

Specification Sheet

Certificate of Analysis

Certificate of Origin

More Information

Ammonium molybdate tetrahydrate

ACS reagent, 81.0-83.0% MoO3 basis

ACS reagent, 81.0-83.0% MoO₃ basis