Description

Ammonium Tungstate Pentahydrate is an important inorganic salt of tungsten, primarily used as a high-purity precursor material. This compound is valued for its role in producing other tungsten chemicals and advanced materials where precise stoichiometry and purity are critical. It is essential for manufacturers and research facilities in the chemical synthesis, catalyst development, and electronics sectors seeking a reliable source of high-quality tungsten compounds.

Application

• Precursor for Tungsten Oxide and Metallic Tungsten: A key starting material in the synthesis of tungsten trioxide (WO3) and, subsequently, tungsten metal powder via reduction processes.
• Catalyst and Catalyst Support: Used in the formulation of catalysts for various chemical reactions, including petroleum refining and environmental catalysis.
• Electrochemical and Electrochromic Devices: Employed in the research and production of materials for smart windows, displays, and sensors.
• Ceramic and Pigment Manufacturing: Serves as a source of tungsten for producing specialized ceramics, glasses, and yellow pigments.
• Analytical Chemistry: Used as a standard or reagent in analytical procedures and laboratory research.
• Corrosion Inhibitors: A component in formulations designed to protect metals from corrosion.
• Flame Retardants: Incorporated into materials to enhance fire resistance properties.
• Phosphors and Luminescent Materials: Utilized in the development of phosphors for lighting and display technologies.

Basic Information

Product Name	Ammonium Tungstate Pentahydrate
CAS No.	76585-22-3
Molecular Formula	(NH4)10W12O41 • 5H2O or related hydrated paratungstate forms
Molecular Weight	Contact for details
Synonyms	Ammonium Paratungstate Pentahydrate; Ammonium Tungstate(VI) Pentahydrate; Diammonium Decatungstate Pentahydrate; APT Pentahydrate; Ammonium Paratungstate; Ammonium Wolframate Pentahydrate; Tungstic Acid, Ammonium Salt, Pentahydrate
EINECS	Contact for details

Quality Control

Our Ammonium Tungstate Pentahydrate is produced and tested under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, composition, and physical properties. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (as WO3)	≥ 88.5 %
Ammonium (NH4) Content	6.0 - 7.5 %
Water of Crystallization	4.0 - 6.0 %
Insoluble Matter	≤ 0.01 %
Chloride (Cl)	≤ 0.001 %
Sulfate (SO4)	≤ 0.002 %
Heavy Metals (as Pb)	≤ 0.001 %
Iron (Fe)	≤ 0.001 %
Moisture (Loss on Drying)	≤ 1.0 %

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