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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-Nummer
12027-67-7
Synonyme

Größe Preis ($) Menge Verfügbarkeit
5g 43,70
25g 149,00
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Ammonium molybdate (para) hydrate, Puratronic®, 99.999% (metals basis excluding W), W 300ppm max

MDL
MFCD00064633
EINECS
234-722-4

Chemische Eigenschaften

Formel
H24Mo7N6O24•xH2O
Molmasse
1163.79(anhy)
Form
Powder
Schmelzpunkt
ca 190° dec.
Dichte
2.498
Löslichkeit
Freely soluble in water.

Anwendungen

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.

Bemerkungen

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.

Literaturverweise

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 Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319-H335

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

Sicherheitshinweise: 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.

Weitere Referenzen

Merck
14,533
Harmonized Tariff Code
2841.70
TSCA
Yes
RTECS
QA4900000

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