WM1778 Ammonium Metatungstate (AMT) Powder (CAS No. 12333-11-8)

Ammonium Metatungstate Description

Ammonium metatungstate, also known as AMT, is a tungsten chemical in the form of highly soluble hydrated crystals. AMT is produced as a minus 10-mesh powder to meet stringent demands in the catalyst, medical, semiconductor, and other high-technology industries. AMT is also used in materials research and analytical chemistry. At room temperature, aqueous solutions can be saturated up to 70% by weight of contained WO3. SAM provides different purity and customized packed Ammonium Metatungstate powder.

Ammonium Metatungstate Specification

Ammonium Metatungstate Applications

AMT is mostly used in industries as a raw material for the production of tungsten catalysts for different systems of reactions including oxidation, hydroxylation, hydrogenation, and polymerization. Ammonium metatungstate is also used in the manufacture of various petrochemical catalysts and other tungsten compounds, and it’s the main raw material for tungsten-based catalysts in refineries.

• Reagents for chemical analysis such as for medical diagnosis
• Source material substrate for certain semiconductor devices
• High-purity source medical for research in tungsten chemistry
• Source material for the DeNOx catalyst industry
• As a precursor to a variety of polyoxometalates

Ammonium Metatungstate Safety Information

Ammonium Metatungstate (AMT) Packing

Our Ammonium Metatungstate (AMT) is tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage or transportation.

Frequently Asked Questions (FAQs)

1. What is the environmental impact of Ammonium Metatungstate?

Answer:
Ammonium Metatungstate is primarily released into the environment through water bodies. Although tungsten itself is relatively stable in the environment, high concentrations of tungsten compounds may have toxic effects on aquatic organisms. Therefore, appropriate wastewater treatment measures should be implemented to prevent the excessive discharge of tungsten compounds.

2. What is the role of Ammonium Metatungstate in reduction reactions?

Answer:
In reduction reactions, Ammonium Metatungstate serves as a tungsten precursor, transforming tungsten acid salts into tungsten metal through the reduction process. Common reducing agents include hydrogen, carbon monoxide, or other organic reductants. This process is widely used in the production of tungsten metal and the preparation of tungsten-based coatings.

3. What is the industrial production process of Ammonium Metatungstate?

Answer:
The industrial production process of Ammonium Metatungstate typically includes the following steps:

1. Tungsten Ore Pretreatment: Tungsten ore is crushed, ground, and subjected to beneficiation to extract a solution containing tungsten acid salts.
2. Ammonia Leaching: The tungsten-containing slurry reacts with ammonia water to produce an Ammonium Metatungstate solution.
3. Crystallization and Drying: Through evaporation crystallization, Ammonium Metatungstate is purified, followed by drying to obtain the final product.
4. Quality Control: The product undergoes chemical composition analysis and purity testing to ensure compliance with industrial standards.

4. What are the common substitutes for Ammonium Metatungstate?

Answer:
In certain applications, Ammonium Metatungstate can be substituted with other tungsten compounds, such as:

• Sodium Tungstate
• Ammonium Tungstate
• Tungsten Powder

When selecting substitutes, specific application requirements such as solubility, purity, and reactivity should be considered.

5. What are the applications of Ammonium Metatungstate in synthetic chemistry?

Answer:
In synthetic chemistry, Ammonium Metatungstate is primarily used in the following areas:

• Catalyst Precursor: Used to prepare tungsten-based catalysts, applicable in hydrogenation, alkylation, and oxidation reactions.
• Oxidizing Agent: Employed as a mild oxidizing agent in certain organic synthesis processes.
• Coordination Compound Synthesis: Reacts with organic ligands to form tungsten complexes used in catalysis and material synthesis.