Ammoniummetawolframat Description
Ammoniummetawolframat, also known as AMT, is a tungsten chemical presented as highly soluble hydrated crystals. SAM manufactures AMT as a powder with a minus 10 mesh size to meet the specific requirements of catalyst, medical, semiconductor and other high technology industries. It is used in materials research and analytical chemistry. At room temperature, aqueous solutions can be saturated with up to 70 wt.-% of WO3. SAM supplies Ammoniummetawolframat powder in various purity grades and in custom packaging.

Ammoniummetawolframat Specification
Grade
|
AMT-1
|
AMT-2
|
Composition of WO3 (%)
|
≥88
|
≥84
|
Water Solubility (25°C)
|
300g AMT/100 ml water
|
|
Insoluble Impurities (%)
|
≤0.1
|
≤0.5
|
Fe
|
0.002
|
0.005
|
Si
|
0.002
|
0.006
|
Mo
|
0.01
|
0.03
|
Ca
|
0.001
|
0.001
|
Al
|
0.001
|
0.001
|
Mg
|
0.001
|
0.001
|
Ammoniummetawolframat Applications
AMT is used in industry as a raw material for the production of tungsten catalysts for reaction systems such as oxidation, hydroxylation, hydrogenation and polymerisation. It is used in the manufacture of petrochemical catalysts and other tungsten compounds and serves as the primary raw material for tungsten-based catalysts in refineries.
- Reagents for chemical analysis, for example in medical diagnosis
- Substrate material for certain semiconductor devices
- Highly pure starting material for research in tungsten chemistry
- Feedstock for the DeNOx catalyst industry
- Precursor for a variety of polyoxometalates
Ammoniummetawolframat Safety Information
Symbol
|
GHS05, GHS07
|
Signal Word
|
Danger
|
Hazard Statements
|
H302-H318
|
Precautionary Statements
|
P280-P305 + P351 + P338
|
Personal Protective Equipment
|
N95 dust mask (US), eye protection, gloves
|
RIDADR
|
NONH for all transport modes
|
WGK Germany
|
2
|
Ammonium-Metawolframat (AMT) Packaging
Our Ammoniummetawolframat (AMT) is externally marked and labelled to ensure clear identification and quality control. Measures are taken to prevent any damage during storage or transport.