Description

Tungstic Acid CAS NO 11105-11-6 is a high-purity inorganic compound, typically appearing as a yellow powder. It serves as a crucial intermediate and precursor in the synthesis of various tungsten-based chemicals and materials. This product is essential for manufacturers and researchers in the catalyst, pigment, and advanced ceramics industries, where precise material properties are required.

Application

• Catalyst Production: A key precursor for manufacturing tungsten-based catalysts used in petroleum refining and chemical synthesis.
• Pigments and Dyes: Used in the formulation of high-performance, corrosion-resistant yellow pigments for ceramics, paints, and plastics.
• Ceramic and Glass Industry: Acts as a flux and coloring agent in the production of specialty glasses and advanced ceramic materials.
• Chemical Synthesis: An important starting material for producing other tungsten compounds, such as tungsten oxides and tungstates.
• Fireproofing and Textiles: Imparts flame-retardant properties to fabrics and materials.
• Analytical Chemistry: Employed as a reagent in certain gravimetric analytical methods.

Basic Information

Product Name	Tungstic Acid
CAS No.	11105-11-6
Molecular Formula	H₂WO₄ / WO₃·H₂O
Molecular Weight	249.85 g/mol (for H₂WO₄)
Synonyms	Tungsten(VI) Oxide Monohydrate; Orthotungstic Acid; Wolframic Acid; Tungsten Trioxide Monohydrate; WO₃·H₂O; Yellow Tungstic Acid; Hydrated Tungsten Trioxide
EINECS	234-356-9

Quality Control

Our Tungstic Acid 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) detailing all test results are provided and 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). The product is hygroscopic (moisture-sensitive) and should be kept away from strong acids and strong bases.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow powder
Identification (IR)	Conforms
Assay (as WO₃)	≥ 85.0 %
Loss on Drying	≤ 15.0 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 0.005 %
Iron (Fe)	≤ 0.01 %

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