Description

Tungstenoxidedihydrate CAS NO 23321-70-2 is a hydrated form of tungsten oxide, a significant inorganic compound valued for its role as a versatile precursor in advanced material synthesis. Its controlled composition and purity are critical for ensuring consistent performance in downstream catalytic and electronic applications. This material is essential for manufacturers and research institutions in the chemical, electronics, and energy sectors seeking reliable intermediates for high-value products.

Application

• Precursor for the synthesis of tungsten metal powders and tungsten carbide.
• Starting material in the production of catalysts for petrochemical and environmental processes.
• Key intermediate in the manufacture of phosphors and other functional ceramics.
• Raw material for producing tungsten bronzes and other electrochromic materials.
• Used in research and development of novel semiconductor and nano-structured materials.
• Employed in the formulation of corrosion-resistant coatings and pigments.

Basic Information

Product Name	Tungstenoxidedihydrate
CAS No.	23321-70-2
Molecular Formula	WO3·2H2O or H4O5W
Molecular Weight	251.85 g/mol
Synonyms	Tungsten(VI) oxide dihydrate; Tungstic acid (hydrated); Tungsten trioxide dihydrate; Dihydrogen tungsten tetraoxide; Orthotungstic acid; Wolframic acid; WO3·2H2O; H2WO4·H2O
EINECS	Contact for details

Quality Control

Our Tungstenoxidedihydrate is produced and tested under strict quality management protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive quality assurance, with Certificates of Analysis (COA) available for every shipment to verify compliance with agreed specifications. Our quality systems are designed to meet the rigorous demands of industrial and research applications.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, the material must be stored in a cool, dry place with controlled low humidity. Recommended storage temperature is 15-25°C. Keep the container tightly sealed when not in use to prevent moisture absorption and potential caking.

Specification

Item	Specification
Appearance	Yellow powder
Identification (IR)	Conforms
Assay (as WO3)	≥ 98.0 %
Loss on Drying	≤ 14.0 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 0.005 %

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