Description

Ammonium Metatungstate is a high-purity, water-soluble inorganic salt of tungsten, serving as a crucial intermediate in the production of tungsten metal and its compounds. Its primary value lies in its role as a versatile precursor for catalysts, ceramic pigments, and corrosion-resistant coatings. This product is essential for industries including chemical manufacturing, metallurgy, and advanced material science, where precise tungsten sourcing is critical.

Application

• As a key precursor for the preparation of tungsten trioxide (WO3) and metallic tungsten powders.
• Manufacture of petroleum refining and hydrotreating catalysts.
• Production of phosphors and ceramic pigments for the glass and ceramics industry.
• Used in the formulation of corrosion-resistant and wear-resistant coatings.
• As a starting material for synthesizing various tungsten bronzes and other functional materials.
• Employed in analytical chemistry as a reagent for precipitation and gravimetric analysis.
• Potential use in the development of electrochromic and photocatalytic materials.

Basic Information

Product Name	Ammonium Metatungstate
CAS No.	312695-69-5
Molecular Formula	Typically (NH4)6H2W12O40 • xH2O
Molecular Weight	Contact for details
Synonyms	Ammonium Metatungstate Hydrate; Ammonium Tungstate Metallic; AMT; Ammonium Paratungstate (APT) derivative; Hexaammonium Dodecatungstate; Ammonium 12-Tungstometallate; Ammonium Polytungstate
EINECS	Contact for details

Quality Control

Our Ammonium Metatungstate is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing to ensure consistent purity, composition, and performance. A Certificate of Analysis (COA) detailing key parameters such as tungsten content, impurity levels, and physical properties is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and degradation.

Specification

Item	Specification
Appearance	White or slightly yellow crystalline powder
Identification (IR)	Conforms
Assay (as WO3)	≥ 89.0 %
Solubility (in Water)	Clear, complete solution
Loss on Drying	≤ 2.0 %
Chloride (Cl)	≤ 0.005 %
Sulfate (SO4)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 0.001 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.