Description

Sodium Metatungstate Hydrate, Crystalline is a high-purity, inorganic tungsten compound supplied as a crystalline solid. This material serves as a critical high-density aqueous solution precursor and a versatile reagent in advanced material synthesis and analytical chemistry. It is essential for industries and research facilities requiring precise, heavy-liquid media for mineral separation, polymer synthesis, and catalyst development.

Application

• Preparation of high-density, aqueous heavy liquid solutions for mineralogy and geology (e.g., mineral separation, density gradient centrifugation).
• Use as a precursor or catalyst in the synthesis of tungsten-based materials, including catalysts and ceramics.
• Employed as a dense medium in polymer and composite material research for density adjustment and filler separation.
• Application in analytical chemistry as a reagent for gravimetric analysis and precipitation processes.
• Potential use in radiation shielding material research due to tungsten's high atomic number.
• Component in specialized formulations for electronics and glass manufacturing.

Basic Information

Product Name	Sodium Metatungstate Hydrate, Crystalline
CAS No.	652154-12-6
Molecular Formula	Na6[H2W12O40]·xH2O
Molecular Weight	~ 2986.2 (Anhydrous basis)
Synonyms	Sodium Metatungstate Hydrate; Sodium Metatungstate; Sodium Polytungstate; SMT; Sodium Tungstate(VI) Metahydrate; Sodium 12-Tungstometallate Hydrate; Heavy Liquid Sodium Metatungstate; Na6W12O40·xH2O
EINECS	Contact for details

Quality Control

Our Sodium Metatungstate Hydrate, Crystalline is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent purity, composition, and performance. A detailed Certificate of Analysis (COA) documenting assay, impurity profiles, and physical specifications is provided with every shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect the crystalline form and solution density properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (as Na6W12O40)	≥ 98.0 %
pH (5% aqueous solution)	4.0 - 6.0
Solubility in Water	Clear, complete solution
Loss on Drying	≤ 2.0 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.01 %

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