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A13766 Ammonium molybdate (para) tetrahydrate, 99%

CAS Number
Ammonium heptamolybdate tetrahydrate
Ammonium paramolybdate tetrahydrate

Stock No. Size Price ($) Quantity Availability
A13766-18 50g 29.70
A13766-30 250g 75.60
A13766-0B 1000g 234.00
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Ammonium molybdate (para) tetrahydrate, 99%


Chemical Properties

Formula Weight
1235.86 (1163.79anhy)
Melting point
ca 190° dec.
Storage & Sensitivity
Ambient temperatures.
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: H302-H315-H319-H335

Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P264b-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P312-P330-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Rinse mouth. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Harmonized Tariff Code


  • 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%
  • 40194

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

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