Description

Ammonium Orthotungstate is a key inorganic salt of tungsten, widely utilized as a high-purity precursor material. Its primary value lies in its role as an intermediate for producing other tungsten compounds and catalysts, ensuring consistent quality and performance in downstream processes. This product is essential for manufacturers and R&D facilities in the chemical, electronics, and materials science sectors seeking reliable raw materials for advanced applications.

Application

• Precursor for the synthesis of tungsten oxides (WO3) and metallic tungsten powders.
• Starting material in the production of catalysts for petroleum refining and chemical synthesis.
• Intermediate in the manufacture of phosphors and other specialty chemicals for the electronics industry.
• Used in corrosion-resistant coatings and surface treatment processes.
• Raw material for research and development in advanced material science and nanotechnology.
• Employed in analytical chemistry as a standard or reagent.

Basic Information

Product Name	Ammonium Orthotungstate
CAS No.	15855-70-6
Molecular Formula	(NH4)10W12O41 • xH2O
Molecular Weight	Contact for details
Synonyms	Ammonium Paratungstate; Ammonium Tungstate; Diammonium Tungstate; APT; Ammonium Metatungstate (related compound); Ammonium Wolframate; Ammonium 12-Tungstophosphate (related); Ammonium Polytungstate
EINECS	Contact for details

Quality Control

Our Ammonium Orthotungstate is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay and impurity profile analysis. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters are available upon request to support your quality assurance protocols.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (as WO3)	≥ 88.5 %
Purity (Tungsten Content)	Contact for details
Impurities (Heavy Metals, as Pb)	< 10 ppm
Chloride (Cl)	< 50 ppm
Sulfate (SO4)	< 50 ppm
Loss on Drying	Contact for details

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