Description

Sodium Phosphotungstate Hydrate 99.9+% is a high-purity, inorganic heteropoly acid salt known for its strong acidic and oxidative properties. This material is valued as a versatile catalyst and reagent in organic synthesis and analytical chemistry due to its unique structure and reactivity. It is essential for researchers and manufacturers in the chemical, pharmaceutical, and materials science industries who require a reliable, high-purity source for advanced applications.

Application

• Catalysis: Acts as a highly efficient, reusable acid catalyst for esterification, alkylation, and other organic transformations.
• Analytical Chemistry: Used as a selective precipitating agent for the detection and isolation of alkaloids, proteins, and other basic compounds.
• Material Science: Serves as a precursor for synthesizing functional tungsten-based materials and coatings.
• Electrochemistry: Employed in the development of modified electrodes and electrochemical sensors.
• Pharmaceutical Research: Utilized in process chemistry and as a reagent for the synthesis of complex molecules.
• Textile & Dye Industry: Functions as a mordant in dyeing processes to improve color fastness.

Basic Information

Product Name	Sodium Phosphotungstate Hydrate
CAS No.	312696-30-3
Molecular Formula	Na3PW12O40·xH2O
Molecular Weight	Contact for details (Anhydrous approx. 2950.1 g/mol)
Synonyms	Sodium Phosphowolframate Hydrate; Sodium Tungstophosphate; Phosphotungstic Acid Sodium Salt; Sodium 12-Tungstophosphate; PW12 Sodium Salt; Sodium Polytungstate; Keggin-type Sodium Salt; Sodium PTA
EINECS	Contact for details

Quality Control

Our Sodium Phosphotungstate Hydrate 99.9+% is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high-purity specification and is free from significant impurities. A Certificate of Analysis (COA) detailing purity, assay, and relevant physical parameters is provided with each shipment to guarantee traceability and consistency for your critical processes.

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 product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air or light may affect its quality and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (as Na3PW12O40)	≥ 99.9 %
Loss on Drying	≤ 2.0 %
Chloride (Cl)	≤ 0.005 %
Sulfate (SO4)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 0.001 %

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