Tungstic Acid

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8,000.00 - 13,000.00 / kg( + 18% GST applicable)

25 Kilogram (MOQ)

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Business Type	Manufacturer, Exporter, Supplier
Material	Tungsten
Molecular Weight	$249.85text{ g/mol}$
Packaging	Sealed Container
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Product Details

Application

Commonly Used In The Production Of Tungsten Compounds And Catalysts.

Country of Origin

India

Number Of Flower

Inorganic Compound

Delivery Time

4 to 6 days

Packaging Details

25 kgs bag

Tungstic acid (specifically orthotungstic acid or wolframic acid) is a yellow-coloured inorganic compound. It is the hydrate form of tungsten trioxide ($\text{WO}_3 \cdot \text{H}_2\text{O}$) and serves as a fundamental intermediate in the extraction and chemical processing of tungsten metal.

Key Chemical & Physical Properties

Property	Value / Specification
Chemical Formula	$\text{H}_2\text{WO}_4$
CAS Registry Number	7783-03-1
Molar Mass	$249.85\text{ g/mol}$
Appearance	Bright yellow crystalline powder
Density	$5.59\text{ g/cm}^3$
Melting / Thermal Behavior	Decomposes at $\sim100^\circ\text{C}$ (loses $\text{H}_2\text{O}$ to form $\text{WO}_3$)
Solubility in Water	Virtually insoluble
Solubility in Acids	Insoluble in most mineral acids; soluble in hydrofluoric acid ($\text{HF}$)
Solubility in Bases	Readily soluble in aqueous ammonia and caustic alkalis (forming tungstates)

Primary Applications

Tungsten Production: Essential intermediate in refining tungsten ores (scheelite and wolframite) to produce high-purity tungsten powder, wire, filaments, and tungsten carbide ($\text{WC}$) for cutting tools.
Industrial Catalyst: Acts as an eco-friendly acid/oxidation catalyst in organic reactions, such as alcohol oxidation, olefin epoxidation, and alkane transformations.
Textile & Dye Industry: Applied as a mordant in dyeing processes and as a flame-retardant or waterproofing additive for fabrics.
Pigments & Ceramics: Used to give yellow coloration to ceramics, glazes, and industrial paints.
Analytical Chemistry: Serves as a chemical reagent to precipitate proteins, alkaloids, and test for trace metal ions.

Preparation Methods

Tungstic acid is typically prepared by reacting alkali tungstate solutions (such as Sodium Tungstate) with concentrated mineral acids ($\text{HCl}$ or $\text{HNO}_3$), causing yellow tungstic acid to precipitate out:

$$\text{Na}_2\text{WO}_4 + 2\text{HCl} \longrightarrow \text{H}_2\text{WO}_4\downarrow + 2\text{NaCl}$$

Trade & Identification Details