Description

Ammonium (Meta)Tungstate Hydrate is a high-purity inorganic salt of tungsten, serving as a crucial precursor in advanced materials manufacturing. Its primary value lies in providing a soluble and reactive source of tungsten oxide, essential for producing catalysts, phosphors, and specialized ceramics. This compound is particularly needed by industries involved in catalyst production, ceramic glazes, and corrosion-resistant coatings, where precise material properties are paramount.

Application

• Catalyst Manufacturing: A key precursor for preparing tungsten-based catalysts used in petroleum refining, hydrodesulfurization, and selective oxidation reactions.
• Ceramic & Glass Industry: Used in the formulation of ceramic glazes, pigments, and to impart high-temperature stability and specific optical properties to glass.
• Corrosion-Resistant Coatings: Serves as a starting material for producing tungsten or tungsten carbide coatings via thermal spraying or chemical vapor deposition (CVD).
• Fireproofing & Flame Retardants: Incorporated into polymers, textiles, and wood treatments to enhance fire resistance.
• Analytical Chemistry & Laboratory Reagent: Utilized as a standard or reagent in analytical procedures for tungsten determination and other chemical analyses.
• Electronic Materials: Employed in the production of semiconductors, dielectric layers, and other electronic components.
• Phosphor Production: Acts as a raw material in the synthesis of certain luminescent materials and phosphors.

Basic Information

Product Name	Ammonium (Meta)Tungstate Hydrate
CAS No.	12333-11-8
Molecular Formula	(NH4)6H2W12O40·xH2O
Molecular Weight	Contact for details (Anhydrous: 2956.30 g/mol)
Synonyms	Ammonium Metatungstate Hydrate; Ammonium Paratungstate; Ammonium Tungstate Hydrate; AMT; Ammonium Polytungstate; Hexaammonium Dodecatungstate Hydrate; Ammonium 12-Tungstophosphate Hydrate; APT (commonly used for paratungstate forms)
EINECS	Contact for details

Quality Control

Our Ammonium (Meta)Tungstate Hydrate is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white 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.