Description

Phosphotungstic Acid Hydrate is a versatile heteropoly acid catalyst and analytical reagent of significant industrial importance. Its strong acidity and unique Keggin-type structure make it an efficient, environmentally friendly catalyst for various organic synthesis and oxidation reactions. This compound is essential for R&D laboratories, chemical manufacturers, and industries involved in catalysis, material science, and analytical chemistry.

Application

• Catalysis: Widely used as a solid acid catalyst for esterification, alkylation, and other organic synthesis reactions, offering advantages of high activity and easy separation.
• Analytical Chemistry: Serves as a precipitating and staining agent in biochemistry for the detection of alkaloids, proteins, and other biological macromolecules.
• Material Science: A key precursor for the synthesis of functional materials, including electrochromic and photochromic films, and conductive polymers.
• Corrosion Inhibition: Employed in formulations for corrosion-resistant coatings and surface treatments for metals.
• Pharmaceutical Intermediates: Used in the synthesis of certain drug intermediates where its catalytic properties are leveraged.
• Environmental Technology: Investigated for applications in photocatalytic degradation of pollutants and wastewater treatment processes.

Basic Information

Product Name	Phosphotungstic Acid Hydrate
CAS No.	12501-23-4
Molecular Formula	H3PW12O40 · xH2O
Molecular Weight	2880.05 (Anhydrous basis)
Synonyms	Dodecatungstophosphoric Acid Hydrate; Tungstophosphoric Acid Hydrate; PTA; 12-Tungstophosphoric Acid; Keggin Acid; Phosphowolframic Acid Hydrate; H3PW12O40 Hydrate; WPOM
EINECS	235-716-7

Quality Control

Our Phosphotungstic Acid Hydrate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards for research and industrial applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and other critical parameters.

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 must be kept in a desiccated environment to prevent absorption of atmospheric moisture, which can affect its properties.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms
Assay (as H3PW12O40)	≥ 99.0%
Water Content (Loss on Drying)	≤ 2.0%
Solubility (in Water)	Clear, colorless solution
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.