Determination of phosphates, arsenates, and lead. Ammonium Molybdate Tetrahydrate is a catalyst used for the hydrogen evolution reaction. Also used in the biomedical monitoring of phosphate, specifically in hemodialysis.

Synonyms:
Ammonium heptamolybdate tetrahydrate; Molybdic acid ammonium salt tetrahydrate

CAS No:
12054-85-2
Free Base: 12274-10-1

Molecular Formula:
(NH4)6MO7O24•4H2O

Molecular Weight:
1235.86

Purity (Titration):
≥98%

Purity (MO):
≥50%

Purity (MoO3):
81.0-83.0%

Appearance:
White crystalline powder

Solubility:
Water

Heavy Metals (Pb):
≤0.001%

Chloride (Cl-):
≤0.002%

Sulfate (SO42-):
≤0.02%

Nitrate (NO32-):
To pass test

Phosphate (PO43-):
≤0.0005%

Arsenate, Phosphate, and Silicate (as SiO2):
≤0.001%

Magnesium (Mg):
≤0.005%

Sodium (Na):
≤0.01%

Potassium (K):
≤0.01%

Lead:
≤0.01%

Insoluble Material:
≤0.005%

Storage and Stability:
Maybe stored at RT. Stable for 12 months after receipt.

Warning:
Toxic! Irritant!