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12054-85-2 - Ammonium molybdate (para) tetrahydrate, 99% - Ammonium heptamolybdate tetrahydrate - Ammonium paramolybdate tetrahydrate - A13766 - Alfa Aesar

A13766 Ammonium molybdate (para) tetrahydrate, 99%

CAS Number
Ammonium heptamolybdate tetrahydrate
Ammonium paramolybdate tetrahydrate

Size Price ($) Quantity Availability
50g 27.19
250g 68.60
1000g 212.18
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Ammonium molybdate (para) tetrahydrate, 99%


Chemical Properties

Formula Weight
1235.86 (1163.79anhy)
Melting point
ca 190° dec.
Soluble in water. Insoluble in alcohol.


Ammonium molybdate tetrahydrate is widely utilized in cryo-negative staining which helps to visualize particles while preserving the sample. It is used as a catalyst to desulfurize thiophene and its derivatives. It serves as an analytical reagent to measure the amount of phosphates, silicates, arsenates and lead in an aqueous solution. It is also used in electroplating, in fertilizers for crops and in the production of molybdenum metal and ceramics. It is used as an analgesic in medical field.


Incompatible with strong oxidizing agents and strong acids.

Literature References

The combination with hydrogen peroxide is a system for the ambient temperature oxidative cleavage of epoxides to form ɑ-hydroxy ketones: Chem. Lett., 844 (2000).

Lince, J. R.; Pluntze, A. M.; Jackson, A.; Radhakrishnan, G.; Adams, P. M. Tribochemistry of MoS3Nanoparticle Coatings. Tribol Lett. 2014, 53 (3), 543-554.

McIntosha, S.; Bosscheb, M. V. Towards Understanding the Hydrocarbon Oxidation Activity of Oxides for Direct Hydrocarbon SOFC Anodes. ECS Trans. 2011, 35 (1), 2781-2788.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Harmonized Tariff Code


  • 40194

    Cerium(IV) ammonium sulfate dihydrate, ACS, 94% min
  • A10142

    Cerium(IV) sulfate hydrate, 98%
  • A10889

    Antimony potassium tartrate hydrate, 98%
  • L20254

    Cerium(IV) sulfate, anhydrous, 97%
  • 33262

    Oxalic acid dihydrate, ACS, 99.5-102.5%

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