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12027-67-7 - Ammonium molybdate (para) hydrate, Puratronic®, 99.999% (metals basis excluding W), W 300ppm max - 10811 - Alfa Aesar

10811 Ammonium molybdate (para) hydrate, Puratronic®, 99.999% (metals basis excluding W), W 300ppm max

CAS Number

Size Price ($) Quantity Availability
5g 43.70
25g 149.00
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Ammonium molybdate (para) hydrate, Puratronic®, 99.999% (metals basis excluding W), W 300ppm max


Chemical Properties

Formula Weight
Melting point
ca 190° dec.
Freely soluble in water.


It is used for ceramics, decorating, electroplating, fixing of metals, fertilizers, photography, and as a negative stain in electron microscopy. It is also used in the manufacture of molybdenum. It is a useful reagent for detecting and determining phosphates, arsenates, lead and some alkaloids. It is useful in the preparation of catalysts for desulfurization and dehydrogenation reactions. Ammonium molybdate has been reported to control polycondensation reactions and decrease shrinkage values of metakaolin-based geopolymers.


Ammonium molybdate tends to lose some ammonia molecules when kept in air. When heated above 150 °C, it decomposes into molybdenum trioxide, water and ammonia.

Literature References

Vidal, L.; Joussein, E.; Colas, M.; Absi, J.; Rossignol, S. Effect of the addition of ammonium molybdate on metakaolin-based geopolymer formation: Shrinkage and crystallization. Powder Technol. 2015, 275, 211-219.

Spinthaki, A.; Stathoulopoulou, A.; Demadis, K. D. The interplay between cationic polyethyleneimine and anionic polyelectrolytes for the control of silica scale formation in process waters. Int. J. Corros. Scale Inhib. 2015, 4 (2), 125-138.

Wan, Y. K.; Tian, S. P.; Qin, G. Z. Enhancement of Biocontrol Activity of Yeasts by adding Sodium bicarbonate or Ammonium molybdate to Control Postharvest Disease of Jujube Fruits. Lett. Appl. Microbiol. 2003, 37 (3), 249-253.

Cao, S.; Yuan, Y.; Hu, Z.; Zheng, Y. Combination of Pichia Membranifaciens and Ammonium molybdate for Controlling Blue Mould Caused by Penicillium expansum in Peach Fruit. Int. J. Food Microbiol. 2010, 141 (3), 173-176.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

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

Precautionary Statements: P260u-P201-P280a-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P310a-P405-P501a

Obtain special instructions before use. Wear protective gloves and eye/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Harmonized Tariff Code


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