Description

Tungstic Acid CAS NO 7783-03-1 is a yellow, amorphous powder that serves as a crucial intermediate in the production of tungsten metal and its compounds. Its high reactivity and purity make it an essential precursor for advanced materials and catalysts. This product is primarily required by manufacturers in the chemical, ceramic, and metallurgical industries for synthesizing tungsten-based chemicals, pigments, and fireproofing agents.

Application

• Primary precursor for the production of metallic tungsten powder and tungsten carbide.
• Manufacturing of tungsten-based catalysts used in petroleum refining and chemical synthesis.
• Production of yellow ceramic pigments and colorants for glass and enamel.
• Key raw material for synthesizing other tungsten compounds like ammonium paratungstate (APT) and sodium tungstate.
• Used in the formulation of fire-resistant and flame-retardant materials for textiles and polymers.
• Employed in analytical chemistry as a reagent for the precipitation of alkaloids and certain proteins.
• Starting material for the production of phosphotungstic acid and other heteropoly acids.

Basic Information

Product Name	Tungstic Acid
CAS No.	7783-03-1
Molecular Formula	H₂WO₄ / WO₃·H₂O
Molecular Weight	249.85 g/mol
Synonyms	Orthotungstic Acid; Tungsten(VI) Oxide Monohydrate; Wolframic Acid; Tungsten Hydroxide Oxide (H2WO4); Tungsten Trioxide Monohydrate; WO3·H2O; Hydrated Tungsten Trioxide
EINECS	231-975-2

Quality Control

Our Tungstic Acid is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes comprehensive analytical testing, including assay, impurity profiling, and physical characterization. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee 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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow amorphous powder
Identification (IR)	Conforms
Assay (as WO₃)	≥ 88.5 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.02 %
Iron (Fe)	≤ 0.005 %
Arsenic (As)	≤ 0.001 %
Loss on Drying	≤ 10.0 %

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