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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

Codice CAS
12027-67-7
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
5g 44,19
25g 150,23
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Ammonium molybdate (para) hydrate, Puratronic®, 99.999% (metals basis excluding W), W 300ppm max

MDL
MFCD00064633
EINECS
234-722-4

Proprietà chimiche

Formula
H24Mo7N6O24•xH2O
Peso formula
1163.79(anhy)
Modulo
Powder
Punto di fusione
ca 190° dec.
Densità
2.498
Solubilità
Freely soluble in water.

Applicazioni

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.

Note

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.

Letteratura

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.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H315-H319-H335

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

Dichiarazioni precauzionali: 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.

Altri riferimenti

Merck
14,533
Codice tariffe armonizzato
2841.70
TSCA
Yes
RTECS
QA4900000

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