Ammonium Molybdate Tetrahydrate 99% ACS

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Ammonium heptamolybdate is an odourless crystalline compound ranging in colour from white to yellow-green. It is usually encountered as the tetrahydrate, whose chemical formula is (NH4)6Mo7O24·4H2O. It is often referred to as ammonium paramolybdate or simply as ammonium molybdate, although ammonium molybdate can also refer to ammonium orthomolybdate, (NH4)2MoO4, and several other compounds.

  • Analytical reagent
  • Molybdenum metal and ceramics
  • Dehydrogenation and desulphurisation catalysts
  • Fixing of metals
  • Electroplating
  • Fertilizers for crops.
  • Negative stain in biological electron microscopy

Minimum Assay: >99.3%
Molybdenum (Mo): >54%
Molecular Formula: H24Mo7N6O24•4H2O
Molecular Weight: 1235.86 (1163.79anhy)
Solubility in water (% weight): 43g/100cc cold water 
Alkali: <0.0070%
Nitrogen (Ni): <0.0005%
Magnesium (Mg): <0.0010%
Copper (Cu): <0.0010%
Iron (Fe): <0.0010%
Lead (Pb): <0.0005%
Calcium (Ca): <0.0010%
Aluminium (Al): <0.0010%
Silicon (Si): <0.0010%
Titanium (Ti): <0.0005%
Chromium (Cr): 0.0007%

Hazard Phrases: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Harmful to aquatic life with long lasting effects.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wash hands thoroughly after handling. Use only outdoors or in a well-ventilated area. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell.

Cas No: 12054-85-2
Einecs No: 234-722-4

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